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OTC Transmitters

WIRELESS ANALOG/DISCRETE TRANSMITTER 

Battery-Powered Self-Contained Process Signal Monitoring Solution

WT-AD1

HIGHLIGHTS

  • 3 analog inputs (0-5 Vdc, 24-bit ADC)
  • 1 discrete input (dry contact / NPN)
  • Up to a 10-year battery life
  • Battery powers transmitter and sensor for complete standalone operation
  • Advanced local LCD display interface
  • Self-contained, rugged design
  • Installs in minutes
  • IP66, -40 ˚C to 70 ˚C (-40 ˚F to 158 ˚F)
  • 900 MHz / 915 MHz / 2.4 GHz / 868 MHz
  • Secure AES encryption
  • Class I, Division 1 (Zone 0)
  • Intrinsically Safe

3 Analog Inputs + 1 Discrete Input

The OleumTech® OTC Wireless Analog/Discrete Transmitter is a self-contained, battery-powered solution for remotely monitoring up to three 0-5 Vdc analog and one discrete input signals.  The WT-AD1 delivers up to 9.5 Vdc of power to connected analog sensors. You can calibrate both the zero and max analog point values.

The discrete input is ideal for connecting to a dry contact or open-drain output/NPN source for monitoring state changes. It can be set to normally open or normally closed mode.  This ultra-low-power transmitter is powered by a replaceable battery pack that provides up to a 10-year life.  The push button LCD interface allows for device configuration and instant local data access.

Reliable, Scalable, and Safe

The field-proven wireless sensor node communicates with an assigned wireless gateway within the OTC Wireless Sensor and I/O Network creating a highly scalable network, accommodating virtually any I/O requirement.

The OleumTech wireless transmitter is certified for use in Class I, Division 1 (Zone 0) hazardous locations. It is intrinsically safe, designed not to cause a spark, and can be serviced without being removed from a process.

 This product is also available without a local display.

TECHNICAL SPECIFICATIONS

WIRELESS COMMUNICATIONS 
Radio Band∙ ISM Band (License-Free)
900 MHz / 915 MHz∙ FHSS, FSK, AES Encryption 256-bit (900 MHz), 128-bit (915 MHz)
2.4 GHz∙ DSSS, AES Encryption 128-bit
868 MHz∙ LBT-AFA, AES Encryption 128-bit
Bit Rate∙ 900/915 MHz: 9600 bps / 115.2 kbps; 2.4 GHz: 250 kbps; 868 MHz: 80 kpbs
Output Power (Max)∙ 900/915 MHz: 10 mW; 2.4 GHz: 63 mW; 868 MHz: 25mW
Receiving Sensitivity∙ 900/915 MHz: -110 dBm @ 9600 bps, -100 dBm @ 115.2 kbps
∙ 2.4 GHz: -101 dBm @ 250 kbps; 868 MHz: -106 dBm @ 80 kbps
RF Range∙ 900/915 MHz: Up to 7500 Feet / 1.4 Miles (2.3 km) with Clear Line of Sight
∙ 2.4 GHz: Up to 4.3 Miles (7 km) with Clear Line of Sight
∙ 868 MHz: Up to 5.2 Miles (8.4 km) with Clear Line of Sight
HARDWARE FEATURES 
Device Functionality∙ Wireless Transmitter with Analog and Discrete Inputs
Embedded Controller∙ Ultra-Low Power RISC Microcontroller with Internal FLASH (Field Upgradeable)
Configuration∙ Standard RS232 Serial / BreeZ® Software for PC
Inputs∙ 3 Analog Inputs (0-5 Volt), 24-bit ADC
∙ 1 Discrete Input (For Dry Contact or Open-Drain Output/NPN Device)
Power Source∙ Self-Contained, Internal 3.6 Vdc Lithium Battery
Available Power∙ Supplies Sensor Power Up to 9.5 Vdc
Sensor Power Up Delay∙ Approximately 500 ms
Internal Battery Life∙ Up to 10 Years, Based on User Defined Reporting Intervals
Local LCD Display∙ 32-Character Display (16x2 Lines) with 4 Function Keys + Read Button
Instant Displayable Read∙ Analog Input 1, 2, 3 / Discrete Input / Battery Voltage / RF Status
Local Configuration∙ Integral LCD with Four Push Button Interface
Device Diagnostics∙ Health Tags: Battery Voltage, Received Signal Strength Indication (RSSI), RF Refresh, RF Timeout
MECHANICAL SPECIFICATIONS
Dimensions∙ 5.5" (W) x 12.6" (H) x 4.4" (D) / 140 mm (W) x 320 mm (H) x 112 mm (D)
Package Dimensions ∙ 10.25" (W) x 14" (H) x 6.5" (D) / 260mm (W) x 356mm (H) x 165mm (D)
Package Weight∙ ~7 lbs / 3.2 kg
Connection Fitting∙ (3) 3/4" NPT Female Ports (2x Plugged and Includes 1x 3/4" to 1/2" Reducer Bushing)
Enclosure Casing Material∙ Type 4X Aluminum; IP66
CERTIFICATIONS & COMPLIANCE 
EMC/EMI∙ FCC Part 15 (USA), IC ICES-003 (Canada), ACMA (Australia)
Safety∙ Class I, Division 1, Groups A, B, C, D T3C; Ex ia IIC T3
∙ Class I, Zone 0; AEx ia IIC T3
∙ ATEX: Sira 13ATEX2142X; Ex ia IIC T3 Ga; II 1 G
∙ IECEx: SIR 13.0054X; Ex ia IIC T3 Ga
GENERAL SPECIFICATIONS 
Operating Conditions∙ Ambient Temperature (Class I, Division 1 / Zone 0): -40 °C to 70 °C (-40 °F to 158 °F)
∙ LCD Screen -20 °C to 70 °C (-4 °F to 158 °F)
∙ Ambient Temperature (Non-Hazardous Applications): -40 °C to 80 °C (-40 °F to 176 °F)
∙ LCD Screen -20 °C to 70 °C (-4 °F to 158 °F)
∙ Humidity: 0 to 99 %, Non-Condensing
Warranty∙ 2-Year Parts and Labor
Country of Origin∙ USA
ORDERING INFORMATION 
Model Numbers∙ WT-0900-AD1, WT-0915-AD1, WT-2400-AD1, WT-0868-AD1
Wirelessly Connects To∙ OTC Wireless Gateway
Configuration Cable∙ SX1000-CC2, 20-ft All-in-One Configuration Cable
Replacement Battery∙ Use OleumTech SX1000-BP3 Only