HumiTherm-i Pro Enhanced Temperature + Humidity Indicator
Instruction Manual
Enhanced
‘Temperature + Humidity’ Indicator
(with Dry/Wet RTD Input Selection)
This brief manual is primarily meant for quick reference to wiring connections and parameter searching. For more details on operation and application; please log on to www.ppiindia.net
OPERATOR PAGE AND PARAMETERS
| Parameters | Settings (Default Value) |
Maximum Dry Bulb Temperature Value |
View Only |
Minimum Dry – Bulb Temperature Value  |
View Only |
Maximum %RH Value  |
View Only |
Minimum Peak of RH  |
View Only |
Reset Command  |
 No Yes(Default : No) |
Reset Pass – Code  |
0 to 250 (Default : 0) |
TEMPERATURE – ALARM PARAMETERS
| Parameters | Settings (Default Value) |
Temperature Alarm Type  |
 None Process Low Process High(Default : None) |
Temperature Alarm Setpoint  |
-50.0 to 150.0°C or -58.0 to 302.0°F (Default: For Process Low : -50.0 For Process High : 150.0) |
Temperature Alarm Hysteresis  |
0.1 to 25.0 °C or °F (Default: 0.2) |
Temperature Alarm Logic  |
 Direct Reverse(Default: Direct) |
Temperature Alarm Inhibit  |
No Yes (Default: Yes) |
RELATIVE HUMIDITY – ALARM PARAMETERS
| Parameters | Settings (Default Value) |
| %RH Alarm Type |
None Process Low Process High (Default: None) |
| %RH Alarm Setpoint |
0.0 to 100.0% (Default: For Process Low: 0.0 For Process High: 100.0) |
| %RH Alarm Hysteresis |
0.1 to 25.0% (Default : 0.2) |
| %RH Alarm Logic |
Direct Reverse(Default: Direct) |
| %RH Alarm Inhibit |
No Yes (Default: Yes) |
INPUT CHANNEL CONFIGURATION PARAMETERS
| Parameters | Settings (Default Value) | |||||||||||||||||||||
Input Type For Temp Sensor |
Refer Table 1 (Default : RTD) |
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Signal Low For Temp Sensor  |
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Signal High For Temp Sensor  |
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Temperature Range Low  |
-199.9 to 999.9 (Default : 0.0) |
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Temperature Range High  |
-199.9 to 999.9 (Default : 100.0) |
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Zero Offset For Temp Value  |
-25.0 to 25.0 (Default : 0.0) |
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Input Type For Humidity Sensor  |
Refer Table 1 (Default : 0 to 5 V) |
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Signal Low For Humidity Sensor  |
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Signal High For Humidity Sensor  |
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%RH Range Low  |
-199.9 to 999.9 (Default : 0.0) |
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%RH Range High  |
-199.9 to 999.9 (Default : 100.0) |
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Wet-bulb Temperature Zero Offset  |
-25.0 to 25.0 (Default : 0.0) |
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%RH Zero Offset  |
-99.0 to 99.0 (Default : 0.0) |
SUPERVISORY PARAMETERS
| Parameters | Settings (Default Value) |
Unit Selection for Temperature  |
 °C °F(Default : °C) |
Dry-Bulb Temperature and % RH Min/Max Monitoring  |
No Yes (Default : No) |
| Password For Resetting PV High – Low |
No Yes (Default : No) |
Slave Id  |
(Default : 1) 1 to 127 |
Baud Rate  |
4800 9600 19200 (Default : 9600) |
Parity  |
None Even Odd(Default : Even) |
Communication Write Enable  |
No Yes (Default : Yes) |
DE-HUMIDIFIER CONTROL PARAMETERS
| Parameters | Settings (Default Value) |
De-humidifier Control  |
 Disable Enable(Default : Disable) |
De-humidifier Setpoint |
0.0 to 100.0 (Default : 0) |
De-humidifier Hysteresis  |
0.1 to 99.9 (Default : 2.0) |
Table 1
| Option | What it means | Range (Min. to Max.) | Resolution |
|
3-wire, RTD Pt100 | -199.9 to +600.0 °C/-199.9 to 999.9 °F | 0.1 °C / °F |
 |
0 to 20mA DC current | -199.9 to 999.9 units | 0.1 units |
 |
4 to 20mA DC current | ||
 |
Reserved (Don’t Select) | ||
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0 to 1.25V DC voltage | ||
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0 to 5.0V DC voltage | ||
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0 to 10.0V DC voltage | ||
 |
1 to 5.0V DC voltage |
ELECTRICAL CONNECTIONS
FRONT PANEL LAYOUT
| Symbol | Key | Function |
 |
PAGE | Press to enter or exit set-up mode. |
 |
DOWN | Press to decrease the parameter value. Pressing once decreases the value by one count; keeping pressed speeds up the change. |
 |
UP | Press to increase the parameter value. Pressing once increases the value by one count; keeping pressed speeds up the change. |
 |
ENTER | Press to store the set parameter value and to scroll to the next parameter on the PAGE. |
PV Error Indications for Dry Bulb Temperature
| Message | Error Type |
 |
Over-range Dry Bulb Temp. above Max. Range |
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Under-range Dry Bulb Temp. below Min. Range |
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Sensor Open Dry Bulb Sensor (RTD) Broken/Open |
PV Error Indications for Relative Humidity (RH)
| Message | Error Type | Cause |
|
Under-range | Wet Bulb Temperature above Max. Range |
|
Over-range | Wet Bulb Temperature below Min. Range |
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Sensor Open | Wet Bulb Sensor (RTD) Broken / Open |
 |
RH Error | This error is indicated in the following cases : • Dry Bulb Temperature above 102.0°C. • Dry Bulb Temperature below -20.0°C. • Wet Bulb depression beyond: 50.0°C for Dry Bulb Temperature above 0°C 5.6°C for Dry Bulb Temperature below 0°C |
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Display Freezes To 100.0% | This error is indicated in the following cases : • Wet-Bulb Temperature exceeds Dry-Bulb Temperature. • Computed % RH above 100.0%. |
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Display Freezes To 0.0% | Computed % RH is below 0.0%. |
101, Diamond Industrial Estate, Navghar,
Vasai Road (E), Dist. Palghar – 401 210.
Sales: 8208199048/8208141446
Support: 07498799226/08767395333
E: sales@ppiindia.net
support@ppiindia.net
Jan 2022
Documents / Resources
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PPI HumiTherm-i Pro Enhanced Temperature Humidity Indicator [pdf] User Manual HumiTherm-i Pro Enhanced Temperature Humidity Indicator, HumiTherm-i Pro, Enhanced Temperature Humidity Indicator, Temperature Humidity Indicator, Humidity Indicator, Indicator |
