Anderson JD Series - Section 4 Test and Calibration; Test Procedures; Specifications

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Section 4 Test and Calibration
4.1 TEST PROCEDURES4.1 TEST PROCEDURES
4.1 TEST PROCEDURES4.1 TEST PROCEDURES
4.1 TEST PROCEDURES
This test procedure is written only as a guideline and is not intended to replace the test
procedure in the USPH, Pasteurized Milk Ordinance. The test is designed to check the
accuracy of both sensors, accuracy of the differential indicator, and operation of the differen-
tial switch and relay.
SPECIFICATIONS
Sensor accuracy: ±1.0% of Full Scale
Differential accuracy ±1.0% of Full Scale
Apparatus
1. A known accurate pressure gauge with accuracy greater than or equal to 1/2 of
1.0% of a 0-100 psi scale
2. A pneumatic testing device which will provide two isolated sanitary pressure
connections and a port for the test gauge. A typical apparatus is shown in Figure
12.
FIGURE 12 PNEUMATIC TESTING DEVICEFIGURE 12 PNEUMATIC TESTING DEVICE
FIGURE 12 PNEUMATIC TESTING DEVICEFIGURE 12 PNEUMATIC TESTING DEVICE
FIGURE 12 PNEUMATIC TESTING DEVICE