Instruction Manual
D102005X012
846 Transducer
February 2021
3
Table 1. Specifications
Input Signal
Standard Performance:
4 to 20 mA DC, 4 to 12 mA DC, or 12 to 20 mA DC.
Field adjustable split ranging.
Multirange Performance:
4 to 20 mA DC. Consult factory for split range input
Equivalent Circuit
See figure 3
Output Signal
(1)
Standard Performance:
(Consult factory for split range output)
Direct Action (Minimum span of 6 psi)
Typical outputs: 0.2 to 1.0 bar (3 to 15 psi).
Rangeability between 0.1 and 1.2 bar (1 and 18 psi)
Reverse Action (Minimum span of 11 psi)
Typical outputs: 1.0 to 0.2 bar (15 to 3 psi)
Rangeability between 1.2 and 0.1 bar (18 and 1 psi)
Multirange Performance:
Direct Action (Minimum span of 6 psi)
Typical outputs:
0.2 to 1.9 bar (3 to 27 psi), 0.4 to
2 bar (6 to 30 psi), and 0.3 to 1.7 bar (5 to 25 psi)
Rangeability between 0.03 and 2.3 bar (0.5 and
33 psi)
Reverse Action (Minimum span of 11 psi)
Typical outputs: 1.9 to 0.2 bar (27 to 3 psi), 2 to
0.4 bar (30 to 6 psi), and 1.7 to 0.3 bar (25 to 5 psi)
Rangeability between 2.3 and 0.03 bar (33 and
0.5 psi)
Supply Pressure
(2)
Standard Performance:
1.2 to 1.6 bar (18 to 24 psi)
Multirange Performance:
0.2 bar (3 psi)
(3)
greater than the maximum
calibrated output pressure
Maximum:
2.4 bar (35 psi)
Supply Pressure Medium
Clean, dry air
Per ISA Standard 7.0.01
A maximum 40 micrometer particle size in the air
system is acceptable. Further filtration down to 5
micrometer particle size is recommended. Lubricant
content is not to exceed 1 ppm weight (w/w) or
volume (v/v) basis. Condensation in the air supply
should be minimized
Per ISO 8573-1
Maximum particle density size:
Class 7
Oil content:
Class 3
Pressure Dew Point:
Class 3 or at least 10°C less than
the lowest ambient temperature expected
Output Air Capacity
(4)
Standard:
6.4 m
3
/hr (240 scfh) at 1.4 bar
(20 psi) supply pressure
Multirange:
9.7 m
3
/hr (360 scfh) at 2.5 bar
(35 psig) supply pressure
Maximum Steady‐State Air Consumption
(4)
0.3 m
3
/hr (12 scfh) at 1.4 bar (20 psi) supply pressure
Temperature Limits
(2)
Operating:
-40 to 85
_
C (-40 to 185
_
F)
Storage
:
-40 to 93
_
C (-40 to 200
_
F)
Humidity Limits
0 to 100% condensing relative humidity
Performance
(5)
Note: The performance of all 846 I/Ps is verified
using computer automated manufacturing systems
to ensure that every unit shipped meets its
performance specifications
Accuracy:
$
0.30% of output span
Linearity, Hysteresis, and Repeatability:
$
0.3% of
span.
Temperature Effect (total effect including zero and
span):
$
0.07%/
_
C (0.045%/
_
F) of span
Vibration Effect:
$
0.3% of span per g during the
following conditions:
5 to 15 Hz at 4 mm constant displacement
15 to 150 Hz at 2 g. 150 to 2000 Hz at 1 g.
per SAMA Standard PMC 31.1, Sec. 5.3, Condition 3,
Steady State
Shock Effect:
$
0.5% of span, when tested per SAMA
Standard PMC 31.1, Sec. 5.4.
Supply Pressure Effect:
Negligible
-Continued-
