Purpose: Verification of instrument stability over time.

Description: A canister containing 2 standards which simulate a low and a high moisture absorption.

Connection: Align 2 fixed pins on light shroud with holes in the canister then lock in position by tightening thumbscrew.

Use: As a stability check – With the MCT set to the same CAL channel as used to measure the product, note down the MCT reading from the low side of the cannister. Undo the thumbscrew holding the canister in position, invert it, then retighten. Note the MCT reading again. Future readings, taken at two weekly or monthly intervals should lie within +/- 0.2* of the initial recorded value, if this isn't the case, the gauge may not be functioning optimally.

* With a span of 25. higher spans will give rise to larger deviations from the initial calcheck readings.

Note: Cal Checks can also be used for an approximate calibration transfer, please see Installation Manual for details.

Purpose: To lower internal air temperature when gauge is located in ambient conditions > 50°C/120°F

Description: An integrated panel mounted to the bottom face of all cast aluminium enclosures which may be used with air or water coolant.

Connection: Air cooling - connect the Vortec cooling element to the inlet port. For runs up to 3m, connect 3mm (0.125") pipe or 6mm (0.25)" hose to the inlet. Supply 80 psig (5.5 bar) clean filtered air to the cooler. The generator within the vortex tube is rated for 10 scfm, please ensure the compressor used can generate these volumes.

Water Cooling: Connect a 6mm (0.25") tube to the inlet and outlet connectors on the cooling panel. Supply cold water (20-27°C/65-80°F) at a flow rate of 0.3L/min.

Purpose: To lower internal air temperature when gauge is located in a high temperature environment.

Description: A two part stainless steel enclosure providing easy access to the gauge. The enclosure is air cooled using a vortec cooler.

Connection: The gauge is bolted to the back panel such that it is suspended within the enclosure.

Purpose: To provide a means of measuring powdered and granular product when there is discontinuous flow, or insufficient product density to make a measurement by normal means.

Description: A stainless steel tube terminating in a glass viewing window and sample cup.

Connection: The Sampler is bolted to the spud, which is in turn welded to the duct around the hole which is cut at the installation location. Note the sensor must be supported by a bracket, not left to hang from the Powder sampler!thumbscrew.

Use: A time sequence is set up for the following events: Purge (sample is blown out of the sample cup) Fill (sample fills sample cup)

Sample (measurement duration)

Delay (delay between moisture readout and start of a new cycle)

Purpose: To provide cool pressurised air to the gauge cooling panel.

Description: A device that converts filtered, compressed clean air into 2 airstreams; hot(up to 250°F) and cold( down to -50°F)

Connection: Cold air outlet is connected to the gauge inlet connector via hose (0.25" diameter) or pipe ( 0.125" diameter)

Use: Install correct diameter tubing in order that back pressure does not exceed the stated limit, and ensure that the correct inlet pressure, 80 psig (5.5bar) and volume is used in order to gain maximum efficiency.

Purpose: To provide heating to the gauge Description: A device that can heat the internal temperature of the gauge should this be necessary owing to installation in sub- zero temperatures.

Connection: connection is via an optional “alarm board” which is installed along with the blanket.

Use: The blanket controls the internal temperature to within approximately +/- 1 deg of the set point, 35°C.

Purpose: To keep the window and light path free of oil, condensation and particulates

Description: A canister attachment with a bronze sintered interior ( or nickel coated bronze sinter interior)

Connection: Compressed air (2-3 psig<5scfm) is supplied via an air inlet connector, the canister is attached to the gauge with set screws, and surrounds the optical window.

Purpose: To view product moving within an enclosed chute, fluid bed dryer, or storage bin.

Description: A 2” diameter sapphire, or 4” diameter glass window enclosed within a stainless steel flange.

Purpose: The probe enables measurement within a pipe or vertical chute. It is inserted into the mainstream flow so that product continuously flows over the glass or sapphire viewing window.

Description: A stainless steel tube with an angled end containing a glass or sapphire viewing window.

Connection: The flange of the tube mounts directly onto the gauge.

Purpose: To purge the OI of hazardous vapors, and thus ensure that it is explosion-proof.

Description: Various systems are available depending upon the classification rating of the area in which the gauge, scanner and operator interface are to be installed.

Purpose: To detect the absence of product so that measurements are not updated until product reappears under the gauge. Only necessary when product is discontinuous, or there are frequent lulls in the production stream.

Description: Two photocells attached either side of the light tube, the output from these devices is used to “gate” the sensor.

Connection: These are powered through the main board in the gauge, and provide a contact closure input to the input/output board

Purpose: To support the gauge if it is to be used off-line, at-line or for demonstrations

Description: Includes a base plate, an upright metal tube, clamp and additional perpendicular tube with a mounting bracket for the gauge.

Connection: These are powered through the main board in the gauge, and provide a contact closure input to the input/output board.

Purpose: To enable measurement of product temperature which may then be used to compensate the moisture reading if desired.

Description: Infrared temperature sensor probe mountable inside, or external to the gauge enclosure. The temperature reading is displayed on the O.I and can be output as an analog and/or digital signal.

Connection: The sensor is powered from the gauge, and is factory installed.

Purpose: To support a reflective sample, typically glass, film, paper, etc at an angle to the gauge to eliminate specular (surface) reflections from entering the gauge.

Description: A pressed steel angled holder with circular "cut-out" and passive reflector on the bottom surface.

Purpose: To enable the sensor to use different communication protocols to communicate to a host PC.

Description: This board is mountable on the main board and is supplied with an electronic data sheet allowing the user to program the host computer to receive the data required.

Purpose: This PC program allows users to interface with the sensor. It is an alternative to the Operator Interface but offers the added feature of trend plots where it graphs up to 3 constituents’ outputs.

Connection: The software can be accessed through RS232, RS485 or Ethernet.