AcuTrak Inline Hygrometer and AcuDew Dewpoint Transmitter Instruction Manual
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AcuTrak & AcuDew Inline Hygrometer Dewpoint Transmitter Instruction Manual Issue 1

EU Declaration of Conformity We Of Declare that Model Name: Description: Shaw Moisture Meters Len Shaw Building, Bolton Lane, Bradford, England, BD2 1AF Shaw AcuTrak Mains powered single channel moisture analyser with two alarms and 4-20mA output Conforms to the following Directives: 2014/30/EU The Electromagnetic Compatibility Directive and its amending Directives 93/68/EEC The Low Voltage Directive and its amending Directives And has been designed and manufactured to the following standards: EN 61326-1:2013 & EN 61326-2:2006 Electrical Equipment for measurement, control and Laboratory...

Unpacking Your Shaw Moisture Meters AcuDew & AcuTrak Please examine the AcuDew package for any damage or mishandling. If any damage is evident please notify the carrier and the Shaw Moisture Meters representative from where this unit was purchased. You should have received (if ordered): ● ● ● ● ● ● ● 1 AcuDew 4-20 mA dewpoint transmitter 1 AcuTrak instrument 1 connecting cable of the length specified on your order or two metres as standard 1 instruction manual 1 pressure dewpoint circular calculator 1 small screwdriver If anything is missing please contact your distributor imme

1 Safety Instructions 1.1 Safety First Local health and safety regulations should be obeyed, as should the safety critical prohibitions, warnings and notes highlighted in this user manual. Symbol Key used in this manual. Do Not – Prohibited actions or behaviours. Warning – Danger to personnel and/ or damage to equipment. Additional useful information. • The AcuDew Transmitter delivered to you has been tested for safety, calibrated and approved as shipped from the factory. Note the following precautions: • Do not modify the unit. Improper modification can damage the product or lead to...

• Trouble shooting of the AcuDew - AcuTrak system should only be carried out on a disconnected AcuDew - AcuTrak and under safe conditions. • Do not modify the unit. Repairs to the AcuTrak must be done by Shaw Moisture Meters or authorized distributors only. Warning • Before mounting the AcuDew Transmitter into any system ensure the system is safe to work on. Depressurize and verify that all power connections are isolated in the off position. • Installation should be carried out by trained technicians and following local safety protocols. 1.2 Definitions Hazardous voltages have been defined...

1.5 Normal Operation Operators are only allowed to adjust and operate the AcuTrak when it is safely fixed to a panel, thus avoiding the danger of personal injury and damage. This means there is no electrical shock hazard and the AcuTrak front panel is easily accessible. 1.6 Cleaning When disconnected, the AcuTrak may be cleaned with a cloth moistened with distilled water or ethyl alcohol. 1.7 Maintenance Always ensure the AcuTrak is “switched off” before removing or replacing the AcuDew.

2 AcuTrak and AcuDew Transmitter Quick Start Guide The AcuDew Dewpoint Transmitter is a 2 wire, 4 to 20mA loop powered device, used for continuous measurement of moisture in process gases, including the most common application, compressed air. The AcuDew transmitter is configured to output a 4 to 20mA linear signal for the following moisture units: • Dewpoint temperature, °C • Dewpoint temperature, °F • Parts water vapour per million in a gas (PPMV) • Parts water vapour per billion in a gas (PPBV) Note: Check the AcuDew Transmitter label for its factory programmed range. 3.0 Connecting the...

3.1.2 Connecting the AcuLoop To connect the AcuLoop display to the AcuDew: 1. Disconnect the connector from the AcuDew by turning the locking ring counter-clockwise. 2. Screw this connector on to the back connection of the AcuLoop display. 3. Align the keyed notch and keyed groove. 4. Gently push the AcuLoop display on to the AcuDew turning the locking ring clockwise to secure. 3.1.3 Connecting the AcuDew to an AcuTrak The AcuTrak displays a digital readout of the 4-20 mA input signal derived from an attached AcuDew. The AcuTrak indicator has: • A five digit, red LED display, relay ON/OFF...

3.2 Wiring the AcuDew The AcuDew is a 2-wire, 4-20 mA transmitter. Typical electrical connection to generate a voltage output is shown below. Note: the maximum value for Rs in this circuit can be calculated by the formula: Rs max = [40 x (Vs – 7)]Ω SD T Pi n 2 4 - 2 0mA Sign al SENSE RESISTO R If the wiring resistance is expected to be more than a few percent of the value of Rs, then this resistance must be taken away from the answer to get the maximum usable value of Rs. 3.3 AcuDew - Normal Operation Note: Review the complete manual for further information if necessary. Once the AcuDew is...

4 System Components 4.1 AcuDew The AcuDew Dewpoint Transmitter is a 2 wire, 4 to 20mA loop powered device, used for continuous measurement of moisture in process gases, including the most common application, compressed air. The AcuDew transmitter is configured to output a 4 to 20mA linear signal for the following moisture units: • Dewpoint temperature, °C • Dewpoint temperature, °F • Parts water vapour per million in a gas (PPMV) • Parts water vapour per billion in a gas (PPBV) In normal operation, the transmitter will produce a 4 to 20mA signal, which is proportional to the level of...

Section 9 of this operating manual details the available methods offered by the AutoCal feature. The rugged mechanical design and the industrial type transmitter cable connector of the AcuDew, including its stainless-steel construction, provide outdoor environmental protection to NEMA 4X (IP66). The AcuDew transmitter can withstand maximum process pressures of 350 bar (5000 psig) and support cable lengths up to 1000 meters (3200 feet). Designed for easy installation and operation, the AcuDew requires little or no maintenance and will provide reliable and accurate measurements in most...