Honeywell FEMA Smart SN Electronic Pressure Transmitter
Product Data
General
The microprocessor-controlled Honeywell FEMA Smart SN Electronic Pressure Transmitters measure 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. The M12x1 angled plug is included in the scope of delivery. The devices are screwed directly into the pressure line or pressure vessel (G1/2"). Both 2- 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 (Human-Machine-Interface versions only), can be swiveled for better readability, display can be rotated in 90° steps via software.
- Self-monitoring.
Technical Data
Materials
- Parts in contact with medium: Stainless steel (1.4571)
- Chemical resistance: 4C4 as per EN 60721-3-4
- HMI: PA66 GF25
Weight
- Total weight: 300 g (without HMI), 350 g (with HMI)
Storage Temperature
- Versions without HMI: -40...+80 °C (≤ 16 bar)
- Versions with HMI: -40...+100 °C (> 16 bar)
- General: -30...+80 °C
Ambient (Operating) Temperature and Humidity
| Parameter | Versions without HMI | Versions with HMI |
|---|---|---|
| Ambient Temperature | -20...+80 °C | -20...+70 °C |
| Relative Humidity | 0...95%, non-condensing | |
| Medium Temperature | -20...+80 °C | |
Climate Class
| Environment | Class |
|---|---|
| Indoors | 4K4H as per EN 60721-3-4 |
| Outdoors | 3K8H as per EN 60721-3-3 |
Mechanical Stability
| Characteristic | Specification |
|---|---|
| Vibration | 20 g as per IEC 68-2-6 (up to 2000 Hz) |
| Mechanical Shock | 100 g as per IEC 68-2-27 |
Pressure Resistance / Accuracy (combined non-linearity, hysteresis, and repeatability at 20 °C)
| Parameter | Pressure Range | Sensor Type | |
|---|---|---|---|
| P ≤ 16 bar | P > 16 bar | ||
| Overpressure safety | 2x Pnominal | 2x Pnominal | piezo |
| Burst pressure | 4x Pnominal | 10x Pnominal | |
| Accuracy | max. ±0.8% FS (typ. ±0.5% FS) | max. ±1% FS (typ. ±0.6% FS) | thin-film |
General Specifications
| Specification | Value |
|---|---|
| Pressure Measurement Range | 0...40 bar, -1...1 bar |
| Cycle Time | 100 ms |
| Protection Rating | IP67 as per EN 60529-2 (Versions without HMI) IP65 as per EN 60529-2 (Versions with HMI) |
| 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 Output (Analog)
| Output Type | Specification |
|---|---|
| Current (2-wire) | 4...20 mA |
| Voltage / Current (3-wire) | 0/2...10 V, 0/4...20 mA |
| Voltage Supply (2-wire) | 18...35 Vdc |
| Voltage Supply (3-wire) | 18...35 Vdc, 24 Vac +10%/-20%, max. 50 mA |
| Current Output Load | max. load = (VSUPPLY - 16 V) / 22 mA (max. error ±0.25% FS) 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 | Value | |
|---|---|---|
| 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 Electrical Wiring
Mounting
The device is mounted directly to the pipe / vessel via a G1/2" (standard manometer) process connection (size 27 wrench). This process connection serves to fasten and secure the device in place. All mounting orientations are permitted.
Dimensions
The geometry of the G1/2" connection conforms to DIN EN 837. The transmitter has an overall length of approximately 152 mm, with a body diameter of about 64 mm. The G1/2" thread extends about 20 mm, and the M12 connector is approximately 30 mm long.
Pin Assignment of Plug
The plug is an A-coded, 4-prong M12 plug. The pin assignments vary by model type:
- General (PTH...): Pin 1 (L+/~), Pin 2 (WARN), Pin 3 (L-/~), Pin 4 (U/I).
- PTS...V3 (3-wire, 0-10V): Pin 1 (L+), Pin 2 (WARN), Pin 3 (L-/~), Pin 4 (UOUT).
- PTS...A3 (3-wire, 4-20mA): Pin 1 (L+), Pin 2 (WARN), Pin 3 (L-/~), Pin 4 (IOUT).
- PTS...A2 (2-wire, 4-20mA): Pin 1 (L+/~), Pin 2 (WARN), Pin 3 (L-/~), Pin 4 (n.c. - not connected).
Diagram Description (Fig. 1. Overview of models): This diagram illustrates the model key, showing how to construct a model number based on the pressure transmitter type (PT), HMI presence (H/S), pressure range (e.g., RB010 for 0-10 bar), process connection (1 for G1/2"), and output type (A2 for 2-wire 4-20mA, V3 for 3-wire 0-10V, A3 for 3-wire 4-20mA).
Diagram Description (Fig. 2. Dimensions): This diagram shows the physical dimensions of the transmitter, indicating the G1/2" process connection and the M12 electrical connector. Key dimensions are provided in millimeters.
Diagram Description (Fig. 3. A-coded M12 plug): This diagram visually represents the pin assignments for the M12 connector for different transmitter configurations (PTH, PTS...V3, PTS...A3, PTS...A2).
Electrical Protection
When powered with DC voltage (Vmax = 35 Vdc), the device is protected against pole-reversal. The input pins of the M12 connector are also protected against miswiring, preventing the device from operating if incorrectly connected.
LCD (HMI-Models Only)
HMI models feature a 19 x 19 mm LCD 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.
Diagram Description (Fig. 4. Menu structure excerpt): This diagram shows a simplified navigation flow for the HMI menu, illustrating steps like 'Start', 'pressure' (with start/end values), 'Mode' (e.g., '3-wire 0..10V'), 'Function' (e.g., 'Non-inv.'), and 'Att. filter' (e.g., '10%'). Navigation buttons like 'MENU', 'ESCAPE', 'Start', 'End', 'PREVIOUS', 'NEXT' are indicated.
Accessories
- Included in delivery: M12x1 Angled plug.
- Optional: DMW Pressure surge reducer, ST12-5-G Straight M12x1 plug.
