E-RHT-10 Series Humidity and Temperature Transmitter
“
Product Information
Specifications
- HUMIDITY: Range: Accuracy: Reaction Time:
Repeatability: Resolution: - TEMPERATURE: Range: Accuracy: Reaction Time:
Repeatability: Resolution: - OPERATING TEMPERATURE: Transmitter:
Probe: - The product life of this instrument is 10 years.
Product Usage Instructions
1. Description
The E-RHT-10 is a microprocessor-based transmitter designed for
relative humidity and temperature measurements. It features
single-chip sensors calibrated for humidity and temperature,
providing 16-bit serial digital output for easy data reading.
2. Type Coding
The E-RHT-10 comes in different configurations based on output
options, communication protocols, probe types, and operation
voltages. Refer to the provided code table to select the
appropriate configuration for your needs.
3. Dimensions
The E-RHT-10 is housed in a waterproof plastic case measuring
115 x 90 x 55 mm. The dimensions may vary based on the presence of
an indicator. External cables are connected using cable glands, and
probe filters are specified for different probe types.
4. Connection Diagram
The connection diagram shows how to connect the operating
voltage, relay outputs, communication lines, and other components
of the E-RHT-10. Pay attention to the polarity and connection
points as indicated in the diagram.
FAQ
Q: What is the accuracy of the relative humidity and
temperature measurements?
A: The accuracy of relative humidity and temperature
measurements is specified in the provided specifications section.
Please refer to the accuracy values for detailed information.
Q: Can the E-RHT-10 be used for outdoor applications?
A: The E-RHT-10 is housed in a waterproof case, making it
suitable for outdoor use. However, ensure that the operating
temperature range is compatible with your outdoor environment.
Q: How long is the product life of the E-RHT-10?
A: The product life of the E-RHT-10 is specified to be 10 years
under normal operating conditions.
“`
E-RHT-10 USER MANUAL
Elimko
1. DESCRIPTION
E-RHT-10 is a microprocessor based transmitter designed using single-chip relative humidity and temperature sensor module. Single-chip sensor contains two micro sensors calibrated for relative humidity and temperature and enables humidity-temperature information to be read in the form of 16 bit serial digital output.
In addition to the sensor input, the device is available in 0 (4) -20 mA and 0-10 V retraction of humidity and temperature values two configurable analog outputs, two digital outputs with relay capable of switching 3A at 220V AC, modbus communicationprotocol, which is controlled according to the RS-485 communication link.
Transmitter is housed in a waterproof plastic case, it has types with and without indicator. Transmitters can be used for all sorts of humidity and temperature measurements by choosing appropriate assembly form.
2. TYPE CODING
Indicator No (There is no relay options) Yes
E-RHT-10 – U – V – W – X – Y – Z
0 1
Output
No
0
2×0-20 mA
1
2×4-20 mA
2
2×0-10VDC
3
2xNA-0 Relay/2×0-20 mA
4
2xNA-0 Relay/2×4-20 mA
5
2xNA-0 Relay/2×0-10 VDC
6
Commun cat on
No
0
RS485 Modbus
1
Probe Type
Wall mount ng
0
Duck mount ng, Length 10cm
1
Duck mount ng, Length 20cm
2
Duck mount ng, Length 30cm
3
Portable, 2m Cable
4
Probe F lter
Plast c Gr d
0
S ntered Bronze
1
Membran
2
Metal Gr d
3
S ntered Sta nless Steel
4
PTFE
5
Operat on Voltage
20-60V AC or 20-85V DC
0
85-265V AC or 85-375V DC
1
3. SPECIFICATIONS
HUMIDITY: Range: Accuracy: Reaction Time: Repeatability: Resolution:
0 – 100 %RH See Figure 3.1. 4 sc ± 0.1 %RH 0.1 %RH
TEMPERATURE: Range: Accuracy: Reaction Time: Repeatability: Resolution:
-40 – 120 ºC see Figure 3.1. 30 sc ± 0.1 ºC 0.1 ºC
OPERATING TEMPERATURE:
Transmitter:
-10 to 55 ºC
Probe:
-40 to 120 ºC
The product life of this instrument is 10 years.
KY-RHT10-0125-1
ERROR %RH
±5
±4
±3
±2
±1
0 0
ERROR ºC
10 20 30 40 50 60 70 80 90 100
Relative Humidity Accuracy
%RH MEASUREMENT
±2
±1
0 -40 -20
0
20
40
60
80
100
120
ºC MEASUREMENT
Temperature Accuracy
Figure 3.1. Accuracy Graphic
Page: 1/6
E-RHT-10 USER MANUAL
Elimko
4. DIMENSIONS
Drawings showing overall view and dimensions of E-RHT-10 are shown in Figure 4.1. The device is housed in a waterproof plastic case in dimensions 115 x 90 x 55 mm. In types with indicator, indicator is assembled on the box cover. In devices without indicator, the box cover is empty.
115 mm
90 mm
55 mm
%RH
0 . 30 . 10 . 50
R 1 R 2
PG9
0.20.40.90 °C ° F
Elimko
RHT-10
L d=12 mm
PROB FILTER
Figure 4.1. Overall Picture and Dimensions of E-RHT-10
External connecting cables are connected to the device by getting them through cable glands. Different cable glands are used for operating voltage, outputs and communication line connections.
Duck mount transmitter probe is made of a 12 mm diameter stainless pipe. There is a sensor and sensor protecting probe filter on pipe end. Immersion length measure is shown as “L” in the drawings.
In wall type devices, probe length is approximately in the length of probe filter and probe is assembled on the side surface of box.
5. CONNECTION DIAGRAM
Operating Voltage
Relay 1
MEASUREMENT AND CONTROL DEVICES
HUM.
+
Relay 2
TEMP.
+
Communication Line
1
L1 Polarity is unimportant
2 L2 in DC Feed.
3
4
5
6
7 COM
8 RH
9T
10 GND 11 TRXA 12 TRXB
Connectors 10, 11 and 12 exists only in devices with communication.
Figure 5.1. Connection Diagram of E-RHT-10
In order to access connectors of E-RHT-10, it is required to unscrew cover screws and open the cover. View of the connectors and connection diagram are shown in Figure 5.1.
Operating voltage is applied to connectors 1 and 2. Polarity is not important for DC operating voltage. The connections of the alarm relays must be made to terminals 3 and 4 for Relay 1 and terminals 5 and 6 for Relay 2. Negative (-) poles of humidity and temperature outputs of the device are common (7), humidity output is taken from connector 8, temperature output is taken from connector 9.
In types with communication option, there are also connectors 10, 11, and 12 enabling communication line connection. The maximum number of devices that can be connected to communication line is 32. In devices with current output, maximum load resistance is 750 W. In devices with voltage output, load impedance must be over 10 kW.
KY-RHT10-0125-1
Page: 2/6
E-RHT-10 USER MANUAL
Elimko
6. OPERATION
6.1. Normal Operating Mode
If the device is energized after making the connections according to connection diagram, it comes to normal operating position. In types without indicator, user cannot change the parameters, the device is used according to label information. Display of device has 2 pieces of 4-digit 7-segment display, R1, R2, ºC and ºF leds and , , and keys located. R1 led when Relay1 is energized, R2 led when Relay2 is energized, lower display unit of displayed temperature value ºC ºC led, while ºF led. In types with indicator, during the normal operating mode, humidity is shown in upper display, temperature is shown in lower display. During the normal operating mode, as long as key is pressed, minimum values measured as of last installation,as long as key is pressed, maximum values measured as of last installation are shown. If keys and are pressed simultaneously installation process is done, maximum and minimum values are equalized to the values measured at that moment.
6.2. Configuration Operations
While in normal operation screen, SET1 and SET2 values can be displayed by pressing key. Set values can be set with and keys on the screens where set values are displayed. You can switch between set values with key. When the set values are displayed, key returns to the normal operation screen.
In order to set other parameters of the device, it must be entered in the configuration pages.
To access the configuration pages, press and together in the normal operation screen. After this, COD is displayed in the upper display and 0 in the lower display. In this screen, password value is set with and keys. The factory setting of the password is 10. When the password value is set, when key is pressed, the display will read PAGE in upper display, OCNF in lower display and access the OCNF page. While you are on this screen, you can move to other pages with and keys. If the key is pressed after the page selection, the first parameter of the selected page is reached. The upper display shows the name of the parameter and the lower display shows its value. Parameter is adjusted with and keys. Use key to switch between the parameters. Press key to return to the normal operation screen and if key is pressed for a few seconds, return first parameter of page.
If you enter the configuration pages with the wrong password, parameters other than SCOD can be monitored, but the values are not changed.
The pages and the parameters in the pages are given in Table 6.2.1.
PAGE OCNF GCNF DZLT CLBR
Prm 1 HRNG AdRs
Hp1 HC 4
Prm 2 HRL
BAUD H1O
Hc20
Prm 3 HRH
PRTY Hp2
HV 2
Prm 4 TRNG UNIT
H2O Hv10
Prm 5 TRL
SCOD Tp1
TC 4
Prm 6 TRH
T1O Tc20
Prm 7 RL1S
Tp2 TV 2
Prm 8 RL1T
T2O Tv10
Prm 9 Prm 10 Prm 11 Prm 12 HYS1 RL2S RL2T HYS2
Table 6.2.1. Configuration Pages and Parameters in the Pages
7. PARAMETERS
7.1. Alarm Set Values SET1: Set values of Alarm Relay 1. If the temperature unit is °C, parameter can be adjusted between -40.0 and 120.0. If the temperature unit is °F, parameter can be set -40.0 and 248.0. SET2: Set values of Alarm Relay 2. If the temperature unit is °C, parameter can be adjusted between -40.0 and 120.0. If the temperature unit is °F, parameter can be set -40.0 and 248.0.
7.2. OCNF Page
HRNG: Output type of humidity is shown. Parameter can be adjusted as 0-20 mA, 4-20 mA or 0-10 V. HRL: Zero value of the humidity output is shown. It can be adjusted between 0.0 (%) and (HRH – 10.0)(%). HRH: Span value of the humidity output is shown. It can be adjusted between (HRL + 10.0) (%) and 100.0(%). TRNG: Output type of temperature is shown. Parameter can be adjusted as 0-20 mA, 4-20 mA or 0-10 V. TRL: Zero value of the temperature output is shown. If the temperature unit is °C, parameter can be adjusted between -40.0 and (TRH – 10.0). If the temperature unit is °F, parameter can be set -40.0 and (TRH – 10.0). TRH: Span value of the temperature output is shown. If the temperature unit is °C, parameter can be adjusted between (TRL + 10.0) and 120.0. If the temperature unit is °F, parameter can be set (TRL + 10.0) and 248.0.
RL1S: Alarm source of Relay 1 is shown. Parameter can be adjusted RH or TEMP. RL1T: Alarm type of Relay 1 is shown. Parameter can be adjusted LO or HI. See 8. ALARM TYPES for details. hys1: Hysteresis of Relay 1 is shown. Parameter can be adjusted between 0 and 10.0. RL2S: Alarm source of Relay 2 is shown. Parameter can be adjusted RH or TEMP. RL2T: Alarm type of Relay 2 is shown. Parameter can be adjusted LO or HI. See 8. ALARM TYPES for details. Hys2: Hysteresis of Relay 2 is shown. Parameter can be adjusted between 0 and 10.0.
KY-RHT10-0125-1
Page: 3/6
E-RHT-10 USER MANUAL
Elimko
7.3. GCNF Page
ADRS: Communication address of device is shown. Parameter can be adjusted between 0 and 32 . Communication address of devices which are connected same line must be different. BAUD: Communication speed of device is shown. Parameter can be adjusted as 9.6, 19.2 or 38.4 kBaud. Communication speed of devices which are connected same line must be same. prty: Communication parity of device is shown. Parameter can be adjusted NONE, ODD or EVEN. Communication parity of devices which are connected same line must be same. UNIt: Unit of temperature value is shown. Parameter can be adjusted ºC or ºF.
SCOD: Password value of device is shown. Parameter can be adjusted betwen 0 and 9999. When entering configuration pages, this value must be enter the COD value. Otherwise, parameters are shown but they are not changed. Factory value of SCOD is 10.
7.4. DZLT Page
See to 9.CORRECTION POINTS AND THEIR ADJUSTMENTS for setting the parameters on this page. Hp1: 1. relative humidity correction point. It can be adjusted between 1.0 and (hp2 – 10.0). H1O: correction value on hp1 point. It can be adjusted between -10.0 and 10.0. Hp2: 2. relative humidity correction point. It can be adjusted between (hp1 + 10.0) and 100.0. H2O: Correction value on hp2 point. It can be adjusted between -10.0 and 10.0. TP1: 1. temperature correction point. It can be adjusted between -40.0 and (tp2 – 10.0). T1O: Correction value on tp1 point. It can be adjusted between -10.0 and 10.0. Tp2: 2. temperature correction point. If the temperature unit is °C, it can be adjusted between (tp1 + 10.0) and 120.0. If the temperature unit is °F, it can be adjusted between (tp1 + 10.0) and 248.0. T2O: Correction value on tp2 point. It can be adjusted between -10.0 and 10.0.
7.5. CLBR Page
HC 4: 4 mA calibration value of humidity output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected humidity output. When this parameter is chosen, humidity output is adjusted 4 mA.
HC20: 20 mA calibration value of humidity output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected humidity output. When this parameter is chosen, humidity output is adjusted 20 mA. HV 2: 2 V calibration value of humidity output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected humidity output. When this parameter is chosen, humidity output is adjusted 2 V.
HV10: 10 V calibration value of humidity output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected humidity output. When this parameter is chosen, humidity output is adjusted 10 V.
TC 4: 4 mA calibration value of temperature output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected temperature output. When this parameter is chosen, temperature output is adjusted 4 mA.
TC20: 20 mA calibration value of temperature output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected temperature output. When this parameter is chosen, temperature output is adjusted 20 mA.
HV 2: 2 V calibration value of temperature output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected temperature output. When this parameter is chosen, temperature output is adjusted 2 V.
Hv10: 10 V calibration value of temperature output. It can be adjusted between 0 and 4095. For the adjustement of this parameter, a milliamperemeter is connected temperature output. When this parameter is chosen, temperature output is adjusted 10 V.
8. ALARM TYPES
RLXT LO
DESCRIPTION Alarm State 1
0 SETX
Alarm State
Measurement Value
Low Alarm
The alarm types set according to RL1T and RL2T parameters are shown in Table 8.1.
The shaded area shown in the graphs shows the hysteresis area adjusted by HYS1 and HYS2.
Alarm (relay) is active in the sections shown as Alarm Status 1.
1 HI
0
KY-RHT10-0125-1
SETX
Measurement Value
Table 8.1. Alarm Types
High Alarm
Page: 4/6
Corrected Value Corrected Value
E-RHT-10 USER MANUAL
Elimko
9. CORRECTION POINTS AND THEIR ADJUSTMENTS
Measurement accuracy of E-RHT-10 device is shown in Section 3.SPECIFICATIONS. Comparing measurements with reliable references, accuracy can be the best as far as possible. To this end, for relative humidity HP1, H1O, Hp2 and H2O parameters are used, for temperature TP1, T1O, TP2 and T2O parameters are used.
Correction form of relative humidity and temperature measurements of these parameters is shown in Figure 9.1. In the graphics, dashed lines show uncorrected measurement values, continuous lines show measurements values after correction.
%RH
ºF ºC
100
90
80
70
H2O
60
50
40
30
H1O
20
10
Corrected Uncorrected
0
0 10 20 30 40 50 60 70 80 90 100 %RH
Hp1
Hp2
Measurement Value
248 120
212 100 T2O
176 80
140 60
104 40
68 20
32 0 T1O -4 -20
Corrected Uncorrected
-40 -40
-40 -20 0 20 40 60 80 100 120 ºC
-40 -4 32 68 104 140 176 212 248 ºF
Tp1
Tp2
Measurement Value
Figure 9.1. Correction Graph of Correction Points
EXAMPLE: E-RHT-10 device measures 19% for 20% RH reference, 82% for 80% reference. In order that the device measures correctly, how the parameters should be adjusted? As the reference points are 20% and 80%, HP1 and HP2 values are adjusted successively to 20.0 and 80.0. If HIO is adjusted to 1.0 as the measurement in 20% is 19%, H2O is adjusted to -2.0 as the measurement in 80% is 82% the desirable state is achieved. Correction in intermediate values is made in linear form.
KY-RHT10-0125-1
Page: 5/6
E-RHT-10 USER MANUAL
Elimko
10. MODBUS ADDRESSES
E-RHT-10 relative humidity and temperature transmitter can be inspected and monitored from a central system according to modbus protocol on RS-485 communication line. Function codes 03, 06 and 16 of Modbus can be used. Parameter addresses are given in TABLE 10.1. Parameters with R feature can only be read, with R/W feature can be both read and written. Limit of parameters are shown in EXPLANATION column.
ADDRESS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
FEATURE R R R R R R
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
PARAMETER RH T
RH Maximum RH Minimum T Maximum T Minimum
HRNG HRL HRH TRNG TRL TRH RL1S RL1T SET1 HYS1 RL2S RL2T SET2 HYS2 UNIT
EXPLANATIONS Relative Humidity Measured Value Temperature Measured Value Maximum Relative Humidity Value Minimum Relative Humidity Value Maximum Temperature Value Minimum Temperature Value Humidity Output Type. (0: 0-20 mA, 1: 4-20 mA, 2: 0-10 V) Humidity Zero Value. (0 – (HRH – 100)) Humidity Span Value. ((HRL + 100) – 1000) Temperature Output Type. (0: 0-20 mA, 1: 4-20 mA, 2: 0-10 V) Temperature Zero Value. (-400 – (TRH – 100)) Temperature Span Value. ((TRL + 100) – 2160) Alarm Source of Relay 1. (0: RH, 1: TEMP) Alarm Type of Relay 1. (0: LO, 1: HI) Set Value of Relay 1. ((-400) – 2160) Hysteresis Value of Relay 1. (0 – 100) Alarm Source of Relay 2. (0: RH, 1: TEMP) Alarm Type of Relay 2. (0: LO, 1: HI) Set Value of Relay 2. ((-400) – 2160) Hysteresis Value of Relay 2. (0 – 100) Temperature Unit. (0: *C, 1: *F)
Table 10.1. Modbus Addresses
KY-RHT10-0125-1
Manufacturer / Technical Support Elimko Elektronik malat ve Kontrol Ltd. ti. ASO 2. Organize Sanayi Bölgesi Alci OSB Mahallesi 2001. Cad. No:14 Temelli 06909 Ankara / TURKYE Tel: +90 312 212 64 50 (Pbx) · Fax: +90 312 212 41 43 E-mail: elimko@elimko.com.tr · www.elimko.com.tr
Page: 6/6
Documents / Resources
 |
Elimko E-RHT-10 Series Humidity and Temperature Transmitter [pdf] User Manual KY-RHT10-0125-1, E-RHT-10 Series Humidity and Temperature Transmitter, E-RHT-10 Series, Humidity and Temperature Transmitter, Temperature Transmitter, Transmitter |