Robertshaw 84370 Series Manual

GENERAL DESCRIPTION
The patented* No. 84370-Series Pressure Sensor
contains a weather-proof, snap-acting valve operated
by pressure variation around the integral sensing
element. Depending upon model used, it vents or
blocks a pneumatic signal when the setpoint is
reached and is available with either automatic or
manual reset. The sensor has adjustable differential
(auto reset versions only) and setpoint, provision for
piped vent operation, and is field reversible. Setpoint
is virtually unaffected by control pressure change or,
in the case of piped vent versions, vent backpressure
change. In the auto reset versions, reset differential
can be changed without shifting setpoint.
For correct operation, control pressure must be
provided thru a .032" (.81 mm) diameter or smaller
orifice.
*Patent 3.986,524
MODELS AVAILABLE
84370 -
Table 1 Table 2
TABLE 1
SUFFIX
A Direct Acting - Vents on Increase
B Reverse Acting - Closes Vent on
Increase
C Direct Acting - Vents on Increase
TABLE 2
SUFFIX
1
2
See Page 2 for SPECIFICATIONS.
Form No. P-2347, Rev. B
DESCRIPTION
SETPOINT RANGE - psi (bar)
5 to 25 (.345 to 1.724)
15 to 65 (1.034 to 4.482)
84370-A, C Series
Vents on Increase
(Direct-Acting)
RESET
Auto
Auto
ORDERING INFORMATION
Specify:
Manual
1. Model
2. Control Pressure - If not specified, sensor is set
using 30 psi (2.068 bar).
3. Setpoint - If not specified, set at minimum.
4. Differential (Automatic Reset models only) - If
not specified, set at standard.
5. Tagging Information.
1
Sales Manual Section 335
PRODUCT SPECIFICATION 84370 SERIES
Pressure Sensor
No. 84370-Series
84370-B Series
Closes Vent on Increase
(Reverse-Acting)
J.I.C. Symbols