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A771

CO Accessory

Instruction Manual

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

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Summary of Contents for A771

Page 1: ...A771 CO Accessory Instruction Manual www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com ...

Page 2: ...larm in the presence of Carbon Monoxide only The A771 can be used with any digital multimeter with a 2 4 volt DC range capable of measuring 0 001 volts DC The A771 is factory set to alarm at 30ppm both when new or when returned from an authorized repair center PRODUCT FEATURES 1 ON OFF switch 2 Power LED 3 Alarm LED 4 Zero adjustment 5 Cord 1 2 3 4 5 www GlobalTestSupply com Find Quality Products ...

Page 3: ...larm in the presence of Carbon Monoxide only The A771 can be used with any digital multimeter with a 2 4 volt DC range capable of measuring 0 001 volts DC The A771 is factory set to alarm at 30ppm both when new or when returned from an authorized repair center PRODUCT FEATURES 1 ON OFF switch 2 Power LED 3 Alarm LED 4 Zero adjustment 5 Cord 1 2 3 4 5 www GlobalTestSupply com Find Quality Products ...

Page 4: ...hm impedance OPERATION Investigation Use 1 Attach the banana jack to the COM and V input jacks of the DMM 2 Turn on the DMM and select the 2 or 4 volt range DC 3 If the voltage reading is below 4 VDC with the A771 in the off position replace the 9 volt battery in the A771 4 Turn on the A771 The alarm LED with flash and the green LED should stay on 5 In a clean environment adjust the zero knob unti...

Page 5: ...hm impedance OPERATION Investigation Use 1 Attach the banana jack to the COM and V input jacks of the DMM 2 Turn on the DMM and select the 2 or 4 volt range DC 3 If the voltage reading is below 4 VDC with the A771 in the off position replace the 9 volt battery in the A771 4 Turn on the A771 The alarm LED with flash and the green LED should stay on 5 In a clean environment adjust the zero knob unti...

Page 6: ...t to the DCmV range touch the tips of the test leads to the GND and Alarm test points on the PCB located on the left and right next to the VR1 and VR2 adjustment pots 3 Reading the DMM set the alarm to the desired level 1ppm 1mV DC by adjusting VR2 4 Remove the leads and reassemble the A771 CALIBRATION 1 Attach the banana jack to the COM and V input jacks of the DMM 2 Turn on the DMM and select th...

Page 7: ...t to the DCmV range touch the tips of the test leads to the GND and Alarm test points on the PCB located on the left and right next to the VR1 and VR2 adjustment pots 3 Reading the DMM set the alarm to the desired level 1ppm 1mV DC by adjusting VR2 4 Remove the leads and reassemble the A771 CALIBRATION 1 Attach the banana jack to the COM and V input jacks of the DMM 2 Turn on the DMM and select th...

Page 8: ...d does not cover damage which occurs in shipment or failure which results from alteration tampering accident misuse abuse neglect or improper maintenance Instruments out of warranty will be repaired for a service charge Return unit freight prepaid to TPI Service Center 9615 SW Allen Blvd Ste 104 Beaverton OR 97005 503 520 9197 This warranty gives you specific legal rights You may have other rights...

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