an ISO 9001:2008 certified company Linearized Analog Transmitters Operational Manual For Models 295, 296 and G Series Transmitters
Table of Contents General description................................................................ 3 Transmitter specifications.................................................... 4 Installation - Models 295, 296............................................. 5 Electrical installation, wiring................................................ 5 High temperature operation................................................ 6 Temperature limits chart Models 295, 296......................
General Description These Max transmitters are designed to work with the entire family of Max Flow Meters to provide extremely precise ISO 9001:2008 certified company flow measurement in aancost effective package. Different options for electrical connections and temperature ranges cover a wide range of application environments – from the laboratory to harsh industrial processes.
Transmitter Specifications Supply Voltage 12 Vdc (Models 294-XXX-100 and G Series ending in B1 or D1) 24 Vdc (Models 294-XXX-000 and G Series ending in A1 or C1) Supply Current Output 90 mA max@ 12 Vdc, 45 mA max@ 24 Vdc Short Circuit Current (1) Output Update rate (2) 21 mA 1 ms Resolution Adjustable without recalibration to any range of ± 10 Vdc (Model 29X-3XX-XXX or ± 20 mA Model 29X-2XX-XXX) Ambient Temperature Range Transmitter (Storage)–40ºC to 85ºC (–40ºF
Installation - Model 295, 296 Model 295, 296 — Mechanical Installation an ISO 9001:2008 certified 1. The transmitter is attached to the flowcompany meter’s threaded magnet shield. Hand tighten only. (~ 3 ft-lb) 2. The transmitter lid has four thread paths. To realign the cable, remove the lid and rotate up to 180° and retighten using an alternate starting point. Tighten to compress the O-ring seal. Removal 1. Remove electrical connections 2. Unscrew transmitter, using a wrench if necessary.
8 7 6 5 3 4 1 2 Shield is only connected at the receiver box end. MUST cover shield with shrink wrap or tape and connect to Brown/Com. D Meter Side Wiring Brown Com Ra C 5v Case B Com Grey White White Black Black Blue Blue NOTE: For ha za rdous location installations, customer must supply their own ca bling a nd conduit between the meter side a nd the receiving box.
Rotation/Output Indicators All of the microprocessor based transmitters incorporate a LED to indicate that they are detecting magnet rotation in the meter. An alternating red/green or blue/green LED indicates that the circuit is detecting a rotating magnet and should provide an output. Additional LED’s are present for setup, programming and troubleshooting and are not intended for general use. Note: There are no selections or adjustments to be made on the circuit board.
Temperature Limits Model 295 Transmitter Series 120 110 100 Ambient Temperature °C 80 60 40 One piece model limits Standard 2 part pickup In Development 2 part pickup 20 0 -25 50 100 110 (24Vdc) 125 (5Vdc) 150 155 200 225 250 300 225 250 300 Process Temperature °C Temperature Limits Model 296 Transmitter Series 120 110 100 Ambient Temperature °C 80 60 40 One piece model limits Standard 2 part pickup In Development 2 part pickup 20 0 -25 50 100 110 (24Vdc) 125 (5Vd
Installation - Hazardous Locations Applies only to Max Model EX295 and EX296 Transmitters with explosion proof certification. These transmitters provide protection via a flame proof housing and through current limiting to the an ISO 9001:2008 certified company circuit board: Must wire with a class 2 power supply (See table for loads).
Removal from Flow Meter Note: the transmitter does not need to be removed from the flow meter for any field servicing or adjustments. Normally, the flow meter and transmitter are shipped back to the factory for calibration as a unit. 1. Remove the locking screw at the edge of the lid and then remove the cap using a 3/8” socket drive. 2. Disconnect wires at the terminal block and remove wiring conduit from transmitter. 3. Locate the locking set screw below the conduit hole and remove it.
Electrical Requirements The device must be powered with a Class 2 power supply.
EC Declaration of Conformity We, Max Machinery Inc. declare as manufacturer under our sole responsibility that the product series 295/296 Explosion Proof Flow Transmitter is in conformity with the provisions of the European Community Directives as shown below. Applicable Series: Part numbers of the format 295-xx1-x00 and 296-xx1-x00 where ‘x’ does not affect conformity to the standards.
