SERIES 851 RANGE–ADJUSTABLE PRESSURE TRANSDUCER
A
UTO
T
RAN
I N C O R P O R A T E D
Specifications
Accuracy:* +/- 1% F.S.O.
Stability: < 1% F.S.O./yr.
Thermal Effects: < +/- 3%(over compensated
range (0.075%/C) (0.042%/F)
Overpressure: 20PSI or 2X FSP, whichever is
greater
Pressure Ranges: see range chart on flip side
Compensated Range: 10 to 50 °C (50 to 122F)
Operating Temperature: -25ºC to 70ºC
Adjustments: Fine Null
Media: Limited only to media that will not
attack Polyester, Silicon, or
Fluorosilicone, liquids are allowed
on either or both sides
Environmental: Condensing OK, Temperature 0 to
65ºC
Input Supply: 15-24 VDC, 24 VAC
(Can be unregulated)
Supply Current: 10mA max (30mA max at 20mA out)
Load: 2kΩ minimum on voltage out,
500Ω max on 4–20mA
Output Signal: 1–5, 1–10, 4–20mA selectable
(3–wire)
Switch Selectable: Output Signal, Pressure Range
Termination: Unpluggable Screw Terminal Block
Size: 3” x 2.6” x 1.5” with mounting
flanges
Pressure Connections: Barbed fitting for 1/8” tube
* Includes non-linearity, hysteresis, and non-repeatability at a fixed
temperature.
Features & Applications
• 8 selectable pressure ranges and
3 selectable outputs in one unit!
• No need to ever open the case to
make adjustments!
• No jumpers to lose!
• Handles condensation, and can be used
on some water applications!
•Over 85% of all HVAC applications
covered in just 3 units!
• Great way to cut down on inventory
and decrease overhead!
• Standard 2–year warranty!
7424 Washington Avenue South • Eden Prairie, MN 55344
(800) 735-8998 • (952) 942-8743 • FAX (952) 942-8753
www.autotraninc.com
ISO 9001
CERTIFIED
How to Order
A typical order number consists of the model number, type, pressure range, input supply, and output signal.
Model Type Pressure Range** Input Supply*** Output Signal
851 D = Differential 4”=0–4”WC, 2”, 1”, 0.5” 15D = 15-24 VAC/DC All units come
or Gage* +/-2”, +/-1”, +/-0.5”,+/-0.25” with 4–20mA,
12”=0–12”WC, 6”, 3”, 1.5” 1–5VDC, &
+/-6”, +/-3”, +/-1.5”, +/-0.75” 1–10VDC options
4P=0–4PSI, 2PSI, 1PSI, 0.5PSI
+/-2PSI, +/-1PSI, +/-0.5PSI, +/-0.25PSI
12P=0–12PSI, 6PSI, 3PSI, 1.5PSI
+/-6PSI, +/-3PSI, +/-1.5PSI, +/-0.75PSI
40P=0–40PSI, 20PSI, 10PSI, 5PSI
+/-20PSI, +/-10PSI, +/-5PSI, +/-2.5PSI
* With a gage application, one of the two ports is vented to atmosphere.
** Pa, KPa, and Bar ranges available
*** All units will drive 500 ohms with the 4–20mA output option
Warranty
Any regular Auto Tran product that proves to be defective in material or workmanship within a warranty period
of two (2) years will be repaired or replaced when returned freight prepaid.
Note: Auto Tran reserves the right to change its specifications at any time, without notice. Auto Tran is not
expert in the customer’s technical field and therefore does not warrant the suitability of its product for the
application selected by the customer.
