KEP BAT R/T (BATRT-M) Field Indicator

The Intrinsically Safe Field Indicator KEP BATRT-M is a battery- or loop-powered flow totalizer and ratemeter that is approved for use in Class I Division I hazardous areas. The KEP BAT R/T-M, with five rate digits and eight total digits, is a battery- or loop-powered indicator that accepts magnetic pickup, DC pulse, and switch closure inputs from the pulse generating flow meters. The device may be provided with a 4-20mA output as an option. When this output is used, the BATRT-M powers it via the 4-20mA loop.

The BATRT-Millennium is equipped with a Modbus option; the Modbus RTU protocol is used. This protocol specifies a message format that hosts and clients will recognize and utilize while communicating over the Modbus network.

Features:

• Class I Division I
• Explosion Proof CSA or UL/C-UL Intrinsically Safe Listed
• Accepts Inputs From Magnetic Pickups, Contact Closures, DC Pulses (Optically Isolated) from Pulse Producing Flowmeters
• Displays Rate & Total Simultaneously
• 5 Digit Rate Display, 8 Digit Totalizer Display
• 4-20mA Analog Output Option (8 updates/sec)
• Powered From Internal Battery, External DC Supply or 4-20 mA Output Loop
• 20 Point Linearization (optional); 10 Point Linearization with Data Logger option
• Isolated Scaled Pulse Output
• Nonvolatile Flash Memory of Setup Data

Versions

• Batrt-m, Explosion Proof style 3 NE Enclosure, CSA Explosion Proof
• Batrt-m, Intrinsically Safe, Style 3NE enclosure

RTU Mode

• The BATRT-Millennium with Modbus communications option supports the Modbus RTU (Remote Terminal Unit) mode only. The Modbus ASCII mode is not supported. The main advantage of the RTU mode is that its greater character density allows better data throughput than ASCII for the same baud rate. The Modbus RTU uses a Master-Slave Query-Response Cycle in which the BATRT-Millennium is the slave device.

BATRT-Millennium Communication Setup Menu

• The configuration menu enables you to customize the Modbus RTU Protocol's Device ID, Baud Rate, and Parity communication settings to match the characteristics of your Modbus network. Each BATRT-Millennium must have its own Device ID and the same Baud Rate and Parity setting.

The optional linearization of this model provides the 20 point linearization table. A common output is the 4-20mA this makes the unit into 2 wire loop-powered device where 4-20mA is proportional to flow rate. Another option available for this unit is the RS45 Modbus RTU communication options. This is a widely used automation protocol, and the signal may be carried up to 4000 feet.

BATRTM setup video

Specifications

DISPLAY:
	Rate Display: (selectable decimal)
	5 Digits (99999), 0.35” High, Display updates once per second with battery power, 8X per second with DC or Loop power Rate Descriptors:
	/SEC, /MIN, /HR
	/MIN, /HR, /DAY with “D” option
	Min. Input Frequency: 0.01 Hz to 10 Hz (selectable delay of 0.1 to 99.9 seconds) Selectable Rate Display Damping
	Totalizer Display: (selectable decimal)
	8 Digits (99999999), 0.2” High Totalizer Descriptors:
	GAL, LIT, FT3, M3, “blank”
	GAL, BBL, MCF, M3, “blank” with “D” option
	Warning Displays: Low battery warning
PULSE OUTPUT:
	The pulse output advances with the least significant digit of the totalizer or decimal multiples there of (see Pulse scale divider).
	Type: Isolated photomos relay
	Max. voltage (off state): 30 VDC
	Current (on state): 100mA
	Pulse Duration: Selectable 0.5, 0.25, 0.125, 0.0625 seconds
	Pulse Scale divider (Pulscale): User selectable, ÷1, ÷10, ÷100 or OFF
	NOTE: Select OFF for max. battery life.
ACCURACY:
	0.01% Reading, ±1 count
	Temperature Drift: 50 ppm/°C Worst Case
SAFETY LISTINGS (Mounting Styles 3, 3NE, 3SS):
	CSA File 091109 (cert. 1120094)
	UL/C-UL File E225832
	CLASS 1, DIV 1, GROUPS B, C, D
	Additional "enclosure only" approvals available for ATEX and IEC
ENVIRONMENTAL:
	OPERATING TEMPERATURE: -4°F (-20°C) to + 158°F (70°C)
	Extended Temp: -22°F (-30°C) to + 158°F (70°C)
	HUMIDITY: 0 - 90% Noncondensing
MOUNTING STYLES:
	0- Circuit Board- OEM option (consult factory)
	1- Panel Mount - NEMA 4X Front
	2- Wall Mount - NEMA 4X Enclosure (keypad mounted behind clear cover)
	3- Explosion Proof - Class I, Division I, Groups B, C & D
	Class II, Division I, Groups E, F & G
	3ΝΕ- Explosion Proof - White, Includes Third Conduit Entry
	Class I, Division I, Groups B, C & D
	Class II, Division I, Groups E, F & G
	3SS- Explosion Proof - Stainless Steel
	Class I, Division I, Groups B, C & D
	Class II, Division I, Groups E, F & G
	5- Wall Mount - NEMA 4X Enclosure (keypad mounted on cover)
	6- Double Ended Explosion Proof - Class I, Division I, Groups B, C & D
	Class II, Division I, Groups E, F & G (contact factory for details)
	NOTE: Meter mounting kits available for styles 2, 3, 5 and 6 Consult Factory
INPUTS:
	MAGNETIC PICKUP INPUT
	Frequency Range: 0 to 3500 Hz
	Trigger Sensitivity: 10 mV p-p
	Over Voltage Protected: ± 30 VDC
	OPTO-ISOLATED DC PULSE INPUT
	High (logic 1): 4-30 VDC
	Low (logic 0): Less Than 1 VDC
	Minimum Current: .5 mA
	Hysteresis: 0.4 VDC
	Frequency Range: 0 to 5 kHz
	Min. Pulse Width: 0.1 msec
	CONTACT CLOSURE INPUT (contact closure to common)
	Internal Pullup Resistor: 100 KΩ to +3.6 VDC
	High (logic 1): Open or 4-30 VDC
	Low (logic 0): Less Than .5 VDC
	Internal Switch Debounce Filter: 0 to 40 Hz
	NOTE: Sustained contact closure will shorten battery life
	RESET INPUT (contact closure to common)
	Internal Pullup Resistor: 100 KΩ to +3.6 VDC
	High (logic 1): Open or 4-30 VDC
	Low (logic 0): Less Than .5 VDC
	Minimum On : 25 msec
	NOTE: Sustained contact closure will shorten battery life
	K-FACTOR
	Range: 0.001 to 99999999
	Decimal Point Locations: XXXX.XXXX to XXXXXXXX
	20 Point Linearization Option (10 Point with Data Logger option)
	This feature allows the user to enter 20 different frequencies with 20 different corresponding K-Factors to linearize non linear signals.
ANALOG OUTPUT OPTION:
	Type: 4-20 mA follows rate display, Two wire hookup
	Accuracy: 0.025% Full Scale at 20° C
	Temperature Drift: 50 ppm/°C Typical
	Reverse Polarity Protected
	Update Rate: 8 times/second
	NOTE: The BATRT-M uses the 4-20 mA loop power as its primary power source when this option is used. The battery is still required for standby battery operation.
Power:
	BATTERY POWERED
	Supplied with 1 or 2 C size Lithium battery pack
	EXTERNAL POWER INPUT
	Voltage: 8.5 to 30 VDC
	Current: Less than 5 mA
	Supplied with 1 C size lithium battery
	Protection: Reverse Polarity Protection on DC Power Input
	LOOP POWERED
	Voltage: 8.5 to 30 VDC
	Supplied with 1 or 2 C size lithium battery(ies)
	Protection: Reverse Polarity Protection on Current Loop
	Loop Burden: 8.5V maximum
BATTERY LIFE EXPECTANCY:
	Expected Years of Operation for BATRT-M of various powering options at equipment duty cycles
	NOTE: Battery shelf life is rated at 10 years by manufacturer
	Life expectancy based on rated battery capacity at 20°C
	The above table is shown with pulse output inactive. Use of pulse output shortens battery life
	Example: A pulse output of 0.06 sec. duration, once per second, would derate the battery life by 20%.
IDATA STORAGE:
	Setup Information: Stored in flash memory
	Totalizer: Stored in battery backed RAM but can be saved to flash memory by operator for recall after battery change out.
COMMUNICATIONS OPTION (S1):
RS232 SERIAL SETUP SOFTWARE OPTION:
	This option enables you to access a variety of process parameters through serial communications. PC compatible communications software
	is included with this option. With this software and a BAT R/T-M Serial Adapter Cable (BSAC1) you will be able to setup the BAT R/T-M through your PC.
RS-485 MODBUS and DATA LOGGER OPTION (S2):
	The optional RS-485 card utilizes Modbus RTU protocol to access a variety of process parameters. The Data Logger stores the totalizer to flash memory once every 24 hours at the time you set. The data
	logger can hold 27 days of totals, on the 28th day the oldest total in the logger is dropped. Requires external DC power: 6-28VDC (input is reverse polarity protected)

Resources:

• Datasheet
• User Manual