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) |
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