User manual HONEYWELL AQS 61-KAM DATASHEET

[. . . ] If used as a controller, each of these outputs can be configured to · Automatic drift correction (ABC-algorithm) based on a long term evaluation provides typical zero drift check maintenance-intervals of up to 5 years · Standard output signals 0(2). . . 10 Vdc or 0(4). . . 20 mA each for CO2 and temperature measurement or control · Programmable mixed controller signal output(s) provides ventilation control strategies to match exactly the application requirements · Digital ON/OFF relay output for CO2 limit monitoring · RS232 interface for configuration, parameter setting or data exchange with a PC using Windows 95/98 · User interface program on diskette for service, recalibration and change of measurement ranges · Optional with 4-digit LCD display with the selectable indication of: · - CO2 and room temperature alternating - Error code - CO2-concentration (ppm) - Temperature (°C) ° - Analog Output1 - Analog Output2 ® U. S. · All rights reserved EN0B-1023 GE02R0700 AQS51/61-KAM COMBINED CO2-/TEMPERATURE DUCT SENSOR/CONTROLLER MODELS Type CO2 and Temperature Duct Sensor without LCD display CO2 and Temperature Duct Sensor with 4-digit LCD display Order Number AQS51-KAM AQS61-KAM ACCESSORIES Description Service Software; 3. 5" Diskette (for changing the sensing range, the parametrization and the post calibration) Testset (consists of a portable gas generator for zero-position calibration, pump, packing, 3m tube, battery and transformer) RS Cable with built-in electronics and adapters Order Number AQS-USP22 AQS-F0005 AQS3/4 or AQS31/41 TECHNICAL DATA Power supply Power consumption Sensor life expectancy Maintenance interval General Self diagnostics Status LED indication Power-up time Ambient operating limits - Temperature - Humidity Operating principle Gas sampling mode Response time Measurement range CO2 - Measurement Converting range Accuracy Pressure dependence Annual zero drift Operating principle Temperature Measurement Measurement range Converting range Accuracy Settings and configuration with Service Software AQS-USP22 P+I control + - Throttling range CO2 - Throttling range temperature - Reset time adjustment ranges 100. . . 800 ppm 1. . . 10 K 2. . . 500 sec (factory setting: 300 sec) 0. . . 50°C 0. . . 95%rh (non condensing) Non-dispersive infrared (NDIR) Diffusion and 3 mm gas inlet push-on barb 2 min (diffusion) or 10 sec (0. 2 ltr/min gas flow) 0. . . 3000 ppm 0. . . 2000 ppm = 0. . . 10 Vdc (factory setting) or 2. . . 10 Vdc / 0. . . 20 mA / 4. . . 20 mA ±1% of measurement range, ±5% of reading +1. 58% of reading per kPa deviation from normal pressure 100 kPa < ±1% of measurement range Thermistor -10. . . 60°C 0. . . 50 °C = 0. . . 10 Vdc (factory setting) or 2. . . 10 Vdc / 0. . . 20 mA / 4. . . 20 mA ±0. 2 K 24Vac ± 20%; 50/60Hz or 24Vdc ± 20% 2W >15 years 5 years Complete power/sensor/analog outputs internal test Yellow = Maintenance required; Red = Relay activated 1 min EN0B-1023 GE02R0700 2 AQS51/61-KAM COMBINED CO2-/TEMPERATURE DUCT SENSOR/CONTROLLER 0. . . 10 Vdc / 2. . . 10 Vdc, impedance 100 or 0. . . 20 mA / 4. . . 20 mA, load 500 10mV (10Bits) ±2% of output voltage, +0. 1 V ±2% of output current, ±0. 3 mA PTC fuse (auto reset), short-circuit proof Both outputs can be configured to any sensor mix (CO2 + temperature + digital input of 5 proportional ranges with priorities and offsets, using the PC software STRATEGY, Version 3) 1A/50 Vac (50VA) or 1 A / 24 Vdc (30 W) Relay activated: 1000 ppm Relay deactivated: 900 ppm (84 x 142 x 46) mm 203 mm Toggles between the following 6 display modes on the 4-digit display: - CO2 and temperature alternating - Error code - CO2 in ppm - Temperature in °C - Analog output 1 - Analog output 2 Output signal Resolution Analog outputs D/A conversion accuracy Protection Customization of P+I controller Single pole, double throw (SPDT) switching, potential free contact. Factory adjusted switching setpoint and differential Sensor housing Sampling probe Digital relay output Dimensions Zigzag traces (accessible after removing the cover) Shortage with a screwdriver simulates pushing of push button MENU Zigzag traces DIMENSIONS 84 46 203 90 142 42 25 5 55 Fig. 1 Dimensions in mm EN0B-1023 GE02R0700 AQS51/61-KAM COMBINED CO2-/TEMPERATURE DUCT SENSOR/CONTROLLER OPERATION General Each of these devices can be used as transmitter for measurement of CO2 concentration and temperature or as a very flexible controller for proportional and integral control of mixed air dampers or variable speed controlled fans in stand alone applications. [. . . ] Select the required output ranges by setting the three coding jumpers accordingly to Table 1. The default settings are for 0. . . 10Vdc outputs as indicated by the darker jumper positions in Fig. The outputs have to be configured before the unit is connected to the power supply. Connect the cable wires to the terminal block as listed in Table 2. 2 1 2 Hole with 25mm Temperature sensor with 150mm cable Fig. 2) to mark on the duct surface the positions of the two holes for the mounting screws. Position the probe relative to the duct so that the air inlet is on the left hand side and faces toward the duct air flow. For flow direction see also the arrow on the flow direction label (Pos. NOTE: In cases where the sampling probe can't be mounted with air flow direction from the left to the right, reversed flow direction through the sampling probe is possible, but influences the response time slightly. Use the enclosed arrow sticker to indicate on the probe the opposite and correct air flow direction 5. Fasten the sampling probe and the sealing gasket onto the duct with the two screws (Pos. 7) cable entry bushings, To make a hole, insert a screwdriver into the groove and hit firmly. Mount for each cable a cable entry bushing into the aspiration box and seal properly. Mounting the aspiration box to the sampling probe is performed by a snap-in bayonet fitting (Pos. Insert first the temperature sensor placed on the end of a 150mm long soldered-on lead (Fig. 23° ccw and stick the box onto the sampling probe, so that the probe is fitted into the notches of the box, then turn the box cw until stop (see Fig. Feed the cables through the cable entry bushings and seal the cable entries carefully by turning the nut to prevent ambient air suction into the aspiration box during operation. If operational parameters different from from the standard values like converting range or special ventilation strategies are required, use a PC and the Service Software AQS-USP22 for this purpose. Using the ABC-function, recalibration of the unit is required only after 5 years of operation. OPERATION MODE AQS61-KAM This sensor has two zigzag traces, MENU and ENTER, on the printed circuit board (see Fig. The zigzag trace MENU is available for selection of the indicated value. The function is as follows: Zigzag Trace Function/Remarks Display selector ­ Short-circuiting of the MENU zigzag trace toggles between the following indication sequence (rotation principle): MENU 1. [. . . ] For AQS51/61-KAM the tests comprise checking internal voltage regulators and output values. In addition, constantly during operation, the sensor probes are checked against failure by checking the valid dynamic measurement ranges. Error Code and Actions Error Code 4 Suggested Action Indicate problems with the power supply. Check OUT1 with a voltmeter and compare the output with the LCD reading (for AQS61-KAM). Disconnect the output wiring to check if the external load is too high and causes the error indication. [. . . ]