Model 948 Pressure Transmitter

4-20 mA HART® Signal, Hazardous Location Approvals, 0-1.5 thru 5K psi


 High Accuracy
 Many Options available
 All Stainless Steel construction




948 is Viatran’s low pressure HART® transmitter with hazardous location approvals. Applications include fuel tank level, gas compressors, chemical processing.


Data sheet  948

Full Scale Pressure Range (FSPR)
0-3 thru 0-5K PSIA, PSIG, PSIS
10:1 with no degradation on static accuracy or thermal effect
Combined Accuracy (Non-Linearity, Hysteresis, Repeatability)
≤±0.2% FSI
Total Performance
<±0.1% /span/±50°F
Thermal Effect
Over operating range: <0.35% at 1:1 -30°F to 185°F
Full Scale Output (FSO)
16 mA ± 0.1% FSO
Dynamic Response Time
< 300 mSec to reach 63% FSO
Operating Temperature Range
-40° F to 185° F
Non-Operating Temperature Range
-65° F to 250° F
Digitally compensated at 6 points from
-30° F to 185° F
Supply Voltage
11.5 VDC min with 230 Ohms load
Power Supply Regulation
±0.02% FSO per Volt
Output Signal
Two wire 4 to 20 mA. Digital process signal super-imposed on a 4-20 mA signal, available to any host computer system conforming to HART protocol.
Load Impedance
230 Ohms to 1,100 Ohms for HART communication
Circuit Protection
Reverse polarity protected.
Insulation Resistance
> 200 MegOhms between all terminals in parallel and at the transmitter case.
RFI/EMI Suppression
Negligible effect to 500 Mhz at
Electrical Connection
1/2″ NPT Male, 3 Wires, 18AWG, 72″L
Color Wire Code
+ Signal
– Signal
Case Ground