LPT-P Digital Car Park Transmitter

For monitoring: Carbon monoxide, Nitrogen dioxide, Methane, Propane, Hydrogen

3 channel, digital (Modbus®) gas detector for enclosed parking facilities

Key Features

• 1, 2 or 3 channel operation with internal and/or remote sensor configurations
• Modbus® RS-485 RTU communication
• LCD display
• 24 VDC power
• 4-conductor daisy chain network wiring
• Standard water / dust tight, corrosion resistant enclosure (drip proof)
• IP54 rated with optional splash guard installed.

The LPT-P is an economical, three channel, digital transmitter that is designed to be part of a gas detection system 
for enclosed parking facilites/parkades and vehicle repair shop applications. It can be configured with a single and/or 
dual internal electrochemical Carbon monoxide (CO) and/or Nitrogen dioxide (NO2) sensor and/or one catalytic 
combustible ESH-A Remote Sensor.

The LCD display provides at-a-glance gas readings for each channel along with alarm and communication status. 
Navigating the menu can be done unobtrusively with a magnetic wand or by using the internal programming buttons.

The LPT-P is not a standalone gas detection device, it operates on a local area network (LAN) using Modbus® 
RS-485 RTU serial communications with a Controller, a control panel, Direct Digital Control system (DDC) or a Building 
Automation System (BAS). The LPT-P does not have an internal alarm or relay.

The LPT-P comes in a standard water / dust tight, corrosion resistant ABS/ polycarbonate enclosure with a hinged, 
secured door. With the optional splash guard installed, the enclosure is IP54 rated and ideal for use in water spray 
or wash down applications.

Target Gas

Gas Sensors				        Carbon monoxide (CO), Nitrogen dioxide (NO2), Hydrogen (H2), Methane (CH4), 
                                                Propane (C3H8)

Mechanical

Enclosure					ABS / Polycarbonate, corrosion resistant 
					        Copper coated interior to reduce RF interference 
					        IP54 rated with splash guard installed

Weight					363 g / 0.8 lbs

Size					        127 x 127 x 71 mm / 5.0 x 5.0 x 2.8 inches

User Interface

Display					Graphic LCD, white border 
					        Magnetic switches to initiate calibration without opening the enclosure

Input/Output

Output					Modbus® RS-485 RTU

Electrical

Power Requirement			16-30 VDC, 3 W, Class 2

Current Draw				45 mA @24 VDC (max)

Wiring					LAN Modbus® RTU (version 1.1b3) RS-485, 16 gauge, 4-conductor shielded 
                                                network wiring (daisy-chain)

Fuses					        Thermal, resetting

Environmental

Operating Temperature			-20°C to 40°C (-4°F to 104°F)

Operating Humidity			15 - 90% RH non-condensing

Certifications

Conforms to				        CSA-C22.2 No. 205-12 / UL508 (Edition 17):2007 
					        EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010 
					        FCC. This device complies with part 15 of the FCC Rules. Operation is subject to 
                                                the following two conditions: (1) This device may not cause harmful 
                                                interference, and (2) this device must accept any interference received, 
                                                including interference that may cause undesired operation. 
					        RoHS compliant circuit boards