Smart SN Electronic Pressure Transmitters
General
The Honeywell FEMA Smart SN Electronic Pressure Transmitters are microprocessor-controlled devices designed for measuring relative pressure ranges from -1...+1 bar and 0...40 bar. They are well-suited for a wide variety of applications, including the precise recording and monitoring of system pressures. Each unit includes an M12x1 angled plug and is designed to be screwed directly into the pressure line or vessel using a G1/2" connection. Both 2-wire and 3-wire versions are available.
Features
- Configurable as 0/2...10 V or 0/4...20 mA (3-wire).
- Adjustable attenuation filter.
- LCD graphical display (available on Human-Machine-Interface models only): This display can be swiveled for improved readability and rotated in 90° steps via software.
- Self-monitoring capabilities.
Technical Data
Materials
- Parts in contact with medium: Stainless steel (1.4571).
- Chemical resistance: 4C4 as per EN 60721-3-4.
- HMI: PA66 GF25.
- Total weight: 300 grams (non-HMI models), 350 grams (HMI models).
Storage Temperature
- Versions without HMI: -40...+80 °C (for ranges ≤ 16 bar), -40...+100 °C (for ranges > 16 bar).
- Versions with HMI: -30...+80 °C.
Ambient (Operating) Temperature and Humidity
- Versions without HMI: -20...+80 °C.
- Versions with HMI: -20...+70 °C.
- Humidity: 0...95% r.h., non-condensing.
- Temperature of medium: -20...+80 °C.
Climate Class
- Indoors: 4K4H as per EN 60721-3-4.
- Outdoors: 3K8H as per EN 60721-3-3.
Mechanical Stability
- Vibration: 20 g as per IEC 68-2-6 (up to 2000 Hz).
- Mechanical shock: 100 g as per IEC 68-2-27.
Device Resistance / Accuracy (combined non-linearity, hysteresis, and repeatability at 20 °C)
| Parameter | P ≤ 16 bar | P > 16 bar |
|---|---|---|
| Pressure range | ||
| Overpressure safety | 2x Pnominal | 2x Pnominal |
| Burst pressure | 4x Pnominal | 10x Pnominal |
| Sensor type | piezo | thin-film |
| Accuracy | max. ±0.8% FS ±0.5% FS (typ.) | max. ±1% FS ±0.6% FS (typ.) |
Pressure Measurement Range
0...40 bar, -1...1 bar
Cycle Time
100 ms
Protection Rating
- Models without HMI: IP67 as per EN 60529-2.
- Models with HMI: IP65 as per EN 60529-2.
EMC
Conforms to EN 61326.
Protection Class
2 as per EN 61010.
Process Connection
G1/2" external thread.
Electrical Connection
4-prong A-coded M12x1 plug.
Transmitter (Analog) Output
- Current (2-wire): 4...20 mA.
- Voltage / current (3-wire): 0/2...10 V, 0/4...20 mA.
Voltage Supply
- Voltage supply (2-wire): 18...35 Vdc.
- Voltage supply (3-wire): 18...35 Vdc, 24 Vac +10%/-20%, max. 50 mA.
Current Output
max. load = (VSUPPLY - 16 V) / 22 mA (max. error ±0.25% FS).
Voltage Output
min. load = 15 kΩ (max. error ±0.25% FS).
Transient Response
approx. 200 ms.
Span, Offset, and Long-Term Drift (within temperature compensation range of 0...80 °C)
| Parameter | Max. | Typical |
|---|---|---|
| Temp. effect on span | ±0.3% FS / 10 K | ±0.2% FS / 10 K |
| Temp. effect on offset | ±0.3% FS / 10 K | ±0.2% FS / 10 K |
| Long-term drift | ±0.3% FS / year | ±0.2% FS / year |
Mounting and Wiring
The device is mounted directly to the pipe or vessel via a G1/2" (standard manometer) process connection (size 27 wrench). This connection serves to fasten and secure the device in place. All mounting orientations are permitted.
Model Key Overview
The model key is constructed using components like PT (Pressure Transmitter), H (HMI) or S (Standard), a range code (e.g., RB010 for 0-10 bar), a process connection type (e.g., 1 for G1/2"), and an output type (e.g., A2 for 4-20mA 2-wire, V3 for 0-10V 3-wire, A3 for 4-20mA 3-wire).
Connector Pin Assignment
The electrical connection uses a 4-prong A-coded M12 plug. Pin assignments vary by model type:
- For PTH... models: Pin 1: L+/~, Pin 2: WARN, Pin 3: L-/~, Pin 4: n.c.
- For PTS...V3 models: Pin 1: L+/~, Pin 2: WARN, Pin 3: UOUT, Pin 4: L-/~.
- For PTS...A3 models: Pin 1: L+/~, Pin 2: WARN, Pin 3: IOUT, Pin 4: L-/~.
- For PTS...A2 models: Pin 1: L+, Pin 2: WARN, Pin 3: L-, Pin 4: n.c.
Electrical Protection
When powered with d.c. (Vmax = 35 Vdc), the device is protected against pole-reversal. The input pins of the M12 plug are protected against miswiring; the device will not operate if miswired.
LCD (HMI Models Only)
HMI models feature a 19 x 19 mm LCD equipped with a bicolor backlight. The backlight is white for normal operation and red for fault mode. 2-wire models do not have a backlight. The LCD display information refresh rate is adjustable between 1 and 9 seconds.
Accessories
- Included in delivery: M12x1 Angled plug.
- Optional: DMW Pressure surge reducer, ST12-5-G Straight M12x1 plug.
Manufacturer Information
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorized Representative: Fema Controls Honeywell GmbH, P.O. Box 1254, 71099 Schönaich, Germany. Phone: (49) 7031-637-02, Fax: (49) 7031-637-850, Website: http://honeywell.de/fema.
Subject to change without notice. Printed in Germany.
CE marking.
