The Model 851 is designed for years of stable performance in even the toughest environmental and media conditions, such as refineries, petrochemical facilities, paper & pulp plants, and waste water treatment facilities. Approvals include FM and CSA for explosion-proof and CSA for intrinsic safety ratings. The Model 851 also meets NACE standards for offshore applications. A one year warranty is standard with every unit.

The small size and light weight of the Model 851 transmitter eliminates the need for complicated mounting hardware and mechanical supports, thereby reducing installation time substantially. The in-line connection permits simple fi eld wiring without the need for additional hardware, adding to the speed and ease of installation. Its slim profi le allows for mounting in places too tight for most other transmitters.

A 4-20 mA output is standard with a 12-40 VDC power supply. The Model 851 is bench adjustable, allowing for calibration of zero and span. With the cover sealed double O-ring assembly, this transmitter is weather proof and capable of direct spray, clean-in-place applications

Specifications

Service

Liquid, gas or vapor 

Range Limits

0-3 to 0-6 psi (0-0.2 to 0-0.4 bar)

3-15 psi (0.2-1.0 bar)

0-6 to 0-15 psi (0-0.4 to 0-1.0 bar)

0-15 to 0-30 psi (0-1.0 to 0-2.1 bar)

0-20 to 0-100 psi (0-1.4 to 0-6.9 bar)

0-60 to 0-300 psi (0-4.0 to 0-20.7 bar)

0-200 to 0-1000 psi (0-14.0 to 0-69.0 bar)

0-600 to 0-3000 psi (0-40.0 to 0-206.9 bar)

0-1000 to 0-5000 psi (0-70.0 to 0-344.8 bar)

Output

4 to 20 mADC, limited to 30 mADC

Power Supply

12 to 40 VDC with reverse polarity protection

Loop Resistance

1400 ohms maximum at 40 volts

Turndown

5:1

Zero Adjust

±10%

Span Adjust

±10%

Temperature Range

Ambient Operating

FM Intrinsically Safe: -40° to 140°F (-40° to 60°C)

FM Explosion-proof: -40° to 180°F (-40° to 82°C)

CSA Intrinsically Safe T3C: -40° to 140°F

(-40° to 60°C)

CSA Explosion-proof: -40° to 180°F (-40° to 82°C)

Process Interface

-40° to 212°F (-40° to 100°C)

Storage

-40° to 212°F (-40° to 100°C)

Overhang

300% upper range limit

Humidity Limits

0 to 100% RH