PID-A PID-A PID-A PID-A PID-APhotoIonisation Detector Sensor Sensor Sensor Sensor Sensor

Figure 1 PID-A Schematic Diagram
Notes:1. Industrial seal between R3.1 and R4.5 (if different to atmosphere) 2. Pin out details: Pin 1: 3.0 - 3.6 V regulated; Pin 2: Signal output; Pin 3: 0 V supply.3. All dimensions ±
0.1mm unless otherwise stated. Table 1 PID-A Specification

PID-AHPID-A1

MINIMUM DETECTION LEVEL (ppb isobutylene) 5100LINEAR RANGE (ppm isobutylene) (1% deviation) 50300OVERRANGE (ppm isobutylene) 1,0006,000SENSITIVITY (linear range) (mV / ppm Isobutylene) > 20> 1WARM-UP TIME MINUTES (A1: to 100ppb, AH: to 20ppb) 155OFFSET VOLTAGE (mV) 60 - 7050 - 51TARGET GASES VOC’s with ionisation potentials < 10.6eV POWER CONSUMPTION 110mW typical (at 3.3V) POWER VOLTAGE 3.0 to 3.6VDC (ideally regulated ±0.01V) OUTPUT SIGNAL Offset Voltage to V ONBOARD FILTER To remove liquids and particulates.
max (V
max = V
supply -0.1V) TEMPERATURE RANGE -40ºC to +40ºC (Intrinsically safe), -40ºC to +60ºC (Non IS) TEMPERATURE DEPENDENCE 0°C to 40°C: 99% of signal at 25°C-20°C: 97% of signal at 25°C RESPONSE TIME (t ERROR STATE SIGNAL
90 ) < 3 seconds, diffusion mode Output less than 35mV RELATIVE HUMIDITY RANGE 0 to 95%rh, non-condensing HUMIDITY RESPONSE Near zero EXPECTED OPERATING LIFE >18 months IS APPROVAL IECEx Ex ia IIC T4; ATEX EEx ia II 1G -40 ºC < T LAMP REPLACEMENT User replaceable (10.6 eV)
a < +40 ºC INDUSTRIAL ELECTRODE STACK User replaceable PACKAGE TYPE Alphasense™ CH-A3 or City Technology™ 4P WEIGHT < 9g POSITION SENSITIVITY None WARRANTY PERIOD 24 months from date of shipment or 18 months from date ofinstallation, whichever comes first.
TTTTTececececechnical Specifhnical Specifhnical Specifhnical Specifhnical Specificaicaicaicaicationtiontiontiontion NOTE: all sensors are tested at ambient environmental conditions, unless otherwise stated. As applications of use are outside our control, the information provided is givenwithout legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own requirements. Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UKTelephone: +44 (0) 1376 556 700 Fax: +44 (0) 1376 335 899 E-mail: sensors@alphasense.com Website: www.alphasense.com ( ©ALPHASENSE LTD ) Doc. Ref. TDS/PIDA/Issue 001