Model 831
Fixed Range
Pressure Transmitter
FEATURES
 |
A miniature, low-priced
fixed range transmitter, just 0.83 lbs. (374 grams) |
|
All welded 316 stainless
steel construction and wetted parts (no aluminum) |
|
Ranges from vacuum to 5000
psi (0 to 1 to 0 to 345 bar) |
|
±0.30% accuracy |
|
Designed to meet FM
Explosion proof approvals (Consult factory for approvals) |
|
4 to 20 mA output at 12 to
30 VDC |
|
3/4-Inch NPT Female
conduit connection cable |
|
1/2-Inch NPT Female
pressure port connection |
|
Straight in-line
construction for a slim profile |
|
24 Inch cable standard |
DESCRIPTION
The Model 831 is the most
durable, accurate and cost-effective fixed range pressure transmitter presently
available. An all stainless steel transmitter, it is designed for years of
stable performance in even the toughest environmental and media
conditions. The Model 831 has been designed to meet FM explosion-proof
ratings. The Model 831 meets NACE standards for offshore applications. A one
year warranty is standard with every unit.
The small size and light
weight of the Model 831 transmitter eliminate the need for complicated mounting
hardware and mechanical supports, thereby reducing installation time
substantially. The in-line connection permits simple field wiring without the
need for additional hardware, adding to the speed and ease of installation.
A 4-20 mA output is standard
with a 12-30 VDC power supply. With all 316 stainless steel welded construction,
the Model 831 is compatible with corrosive media and harardous environment. With
its all-welded construction, this transmitter is weatherproof and capable of a
direct spray with forces up to 200 psi without internal leakage.
SPECIFICATIONS
| Functional Specifications: |
Performance Specifications: |
|
Service:
Liquid, Gas or Vapor
Range:
0 to 15 psi (0 to 1.0 bar)
0 to 30 psi (0 to 2.1 bar)
0 to 100 psi (0 to 6.9 bar)
0 to 300 psi (0 to 20.7 bar)
0 to 1000 psi (0 to 69.0 bar)
0 to 3000 psi (0 to 206.9 bar)
0 to 5000 psi (0 to 344.8 bar)
Output:
4 to 20 mADC, limited to 30 mADC
Offset:
4.0 mA ±2.0% span
Span:
16.0 mA ±1.0% span
Power Supply:
12 to 30 VDC with reverse polarity
protection
Loop Resistance:
900 ohms maximum at 30 volts
Temperature Limits:
Electronics (Ambient) -40F to 140F
(-40C to 60C)
Process Interface -40F to 212F (-40C to 100C)
Storage -40 to 212F (-40C to 100C)
Overrange:
300%
Humidity Limits:
0-100% RH
|
Accuracy:
±0.30% of calibrated span including linearity, hysteresis and repeatability at
25O C and 12 VDC excitation
Stability:
±0.50% for six months
Temperature Effect:
(includes zero and span)
Between -20 F and 140 F (-29 C and 60 C): ±2.0% per 50 F (28 C)
Vibration Effect:
±0.10% for 3 g to 200 Hz
Overrange Effect:
±0.15% full scale per 200% of maximum range
|
|
Materials of Construction: |
|
Process Wetted Parts:
316L SS
Non Wetted Parts:
316 SS
Fill Fluid:
DC 200 Silicone (Standard)
Electrical Connection:
1/2 NPT Female
Weight:
0.83 lbs. (374 grams)
|
| Classifications: |
Factory Mutual:
Explosion-proof for Class 1,
Division 1, Groups B, C, D; Class II, Groups E, F, G; and Class III Hazardous
Locations; Indoor and Outdoor NEMA Type 4 Enclosure |
ORDERING INFORMATION
|
Model |
831 |
| Process
Connection |
T = 1/2 Inch NPT |
| Pressure
Type |
A =
Absolute
G = Gauge
V = Vacuum |
| Pressure
Range |
0015 =
0 to 15 psi (0 to 1.0 bar)
0030 = 0 to 30 psi (0 to 2.1 bar)
0100 = 0 to 100 psi (0 to 6.9 bar)
0300 = 0 to 300 psi (0 to 20.7 bar)
1000 = 0 to 1000 psi (0 to 69.0 bar)
3000 = 0 to 3000 psi (0 to 206.9 bar)
5000 = 0 to 5000 psi (0 to 344.8 bar) |
| Input
/ Output |
B = 12
to 30 Vdc Input / 4 to 20 mADC Output |
| Diaphragm |
L =
316L Stainless |
| Fill |
S =
Silicone |
|
