Power Supply Module; Pump, Valves, Pneumatic System - Teledyne 9110AH Instruction Manual

TELEDYNE Model 9110AH NO

4.2.6 Power Supply Module

The Power supply module supplies AC and DC power to the rest of the instrument. It consists
of a 4 output linear DC power supply and a 15 volt switching supply. In addition, it contains
the switching circuitry to drive the DC operated valves and several switched AC loads to
operate the Rx cell heater, converter heaters and the ozone generator. The only voltages not
generated in the PSM are the high voltage DC required by the PMT which is generated inside
the sensor module and the high voltage AC used by the ozone generator.

4.2.7 Pump, Valves, Pneumatic System

A standard M9110AH comes with 2 valves, the NO/NO
Figure 4-1. Depending on the selected operating mode, the NO/NO
1. NO only mode - routes sample gas continuously into the reaction cell.
2. NO only mode - routes sample gas continuously through the converter, then into the
x
reaction cell.
3. NO/NO switching mode - switches gas alternately around, then through the converter to
x
measure NO, NO
The AutoZero valve provides a continuous zero reference. Periodically, the valve switches to
turn off sample gas to the reaction cell. The ozone continues to flow. The zero reading is
averaged and used to compensate subsequent readings for PMT zero offset.
An external pump comes as standard equipment. The Pump Pack includes a vacuum pump and
ozone scrubber. It is supplied with 0.25" tube fitting to connect to the exhaust fitting on the
M9110AH rear panel. See Figure 2-3 for hook-up information. The pump pack is turned on by
plugging the power cord into an AC outlet, see Figure 4-2.
The pump is supplied as standard equipment, however if you are supplying a pump, it must
have the following characteristics:
1. The pump must supply 2 slpm at 5"Hg-A.
2. The ozone scrubber must remove all ozone from the analyzer exhaust.
3. Connect the exhaust (Figure 2-3) to a pump with a <3 m length of 1/4" O.D. PTFE tubing.
Failure to meet the performance specifications will result in poor analyzer performance, damage
to the pump, damage to the analyzer, and may jeopardize warranty repairs. TELEDYNE
strongly recommends that the factory supplied pump be used with the M9110AH.
Analyzer Operator Manual, 01620, Rev. F
X
, and by calculation NO
x
4-7
valve and the AutoZero valve, see
x
x
.
2
valve: