Detects both forward and reverse directions with a single unit (compatible with gear m1/1.5/2 / involute gear verified). [Patent Pending]
Contributes to reducing work costs such as hole machining and installation adjustment.
Detects magnetic gear rotation from 0Hz, enabling detailed monitoring of movements during start-up and stop.


Contributes to reducing hole drilling during installation, mounting adjustment work, and costs
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| Conventional Product Requires 2 sensors to detect both forward and reverse directions |
RFP16 Detects both forward and reverse directions with 1 unit |
Metal case with integrated tip and main body machining
Traditional cable extraction technology Conical PressTM

Sensor Detection Surface / Conical PressTM
High design flexibility and reduced management costs
Check the installation angle for each gear module with a single card
Check by aligning the arrow on the card with the forward rotation direction of the gear.

G: Gear forward rotation direction
Proprietary semi-open collector output circuit eliminating the need for pull-up resistors
[RFP16A-85] A/B-phase signal output
[RFP16D-85] Speed/direction discrimination signal output
Detailed verification of movements during start-up and stop
A/B-phase signal type Orange LED: A-phase / Green LED: B-phase
Speed/direction discrimination signal type Orange LED: Speed signal
*Demo display imageOperation Check, Maintenance Inspection, and Testing of Backup Power Supplies / Emergency Generators
| Learn more > |

Various Measurements in Wind Tunnel Experiments: Vehicles, Architectural and Civil Engineering Structures, etc.
| Learn more > |

Speed Conversion to CAN
| Learn more > |
| Speed → CAN |
With gear sensors and measuring instruments/signal converters
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| Name | Direction-Discriminating Magnetic Gear Speed Sensor | |
| Model | RFP16A-85 RFP16A-85-P4M [With Connector] |
RFP16D-85 RFP16D-85-P4M [With Connector] |
| Output Signal*1 | Phase A Signal / Phase B Signal *2 | Speed Signal / Direction Discrimination Signal (Forward: H Level, Reverse: L Level) *2 |
| Output Format | Semi-Open Collector (Open Collector + Pull-up) Output | |
| Pull-up Resistor | Phase A Signal: 3.3kΩ / Phase B Signal: 3.3kΩ | Speed Signal: 3.3kΩ / Direction Discrimination Signal: 10kΩ |
| Target Object | Magnetic material (S45C Carbon steel for machine structural use, JIS G 4051, etc.) Standard involute gear | |
| Detection Distance *3 | m1: 0.1 - 1.0mm*3 / m1.5: 0.1 - 2.0mm*3 / m2: 0.1 - 2.7mm*3 | |
| Response Frequency Range *3 | 0 - 15kHz*3 | |
| Output Voltage | Approx. 0.5V lower than the supply voltage | |
| Output Current | 30mA max. (Sink current) | |
| Supply Voltage Range | DC 7 - 25V | |
| Current Consumption | 40mA max. | |
| Operating Temperature Range *4 | -40℃ to +140℃ (Power supply < 15V) / -40℃ to +126℃ (≥ 15V) |
-20℃ to +80℃ |
| Magnet Polarity Tip | S Pole | |
| Operation Indicator LED | Orange LED: Phase A / Green LED: Phase B | Orange LED: Speed Signal |
| Insulation Resistance | 50MΩ or more (With DC 500V megger, between all cables tied together and case) | |
| Dielectric Strength | AC 500V 50/60Hz 1 min, between all cables tied together and case | |
| Vibration & Shock Resistance | JIS E 4031:2013 (Railway applications - Testing for vibration and shock) [Vibration functional test] X, Y, Z: 5.4m/s2 rms each axis in both directions, 10 min each [Vibration durability test] X, Y, Z: 30.6m/s2 rms each axis for 5 hours [Shock test] 300m/s2, 18 times in total (3 times each in positive and negative directions for 3 orthogonal axes) |
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| Temperature Test | Conforms to JIS C 60068-2-14:2011 | |
| External Dimensions | M16 (P=1 screw thread) x L84 | |
| Weight*5 | RFP16A-85: Approx. 230g / RFP16A-85-P4M: Approx. 250g (Including approx. 65g/m for cable part) |
RFP16D-85: Approx. 230g / RFP16D-85-P4M: Approx. 250g (Including approx. 65g/m for cable part) |
| Sensor Body Case | Brass (Nickel-plated) | |
| Cable | 2m PVC 4-core shielded cable, core wire 0.3sq | |
| Accessories | Nuts: 2 pcs, Toothed lock washer: 1 pc, Setting card: 1 sheet | |
| Protection Rating | IP67 | |
| RoHS | RoHS compliant | |
| Price (Excl. Tax) Prices as of February 2024 |
RFP16A-85: 41,800 JPY RFP16D-85: 41,800 JPY |
RFP16A-85-P4M: 44,000 JPY RFP16D-85-P4M: 44,000 JPY |

Brown: +V DC 7 - 25V
Blue: 0V
White: Phase A Signal
Black: Phase B Signal
Shield: Insulated from the body
[A] M16 P=1 screw thread
[B] Supplied nut and toothed lock washer
[C] 14mm wrench flat
[D] Operation indicator LED: Phase A signal / Phase B on back

Brown: +V DC 7 - 25V
Blue: 0V
White: Speed Signal
Green: Direction Discrimination Signal
Shield: Insulated from the body
[A] M16 P=1 screw thread
[B] Supplied nut and toothed lock washer
[C] 14mm wrench flat
[D] Operation indicator LED: Speed signal

1: +V DC 7 - 25V
2: 0V
3: Phase A Signal
4: Phase B Signal
Shield wire is connected via connector shell
[E] LF10WBPD-4P Connector Male*
*Hirose Electric connector

1: +V DC 7 - 25V
2: 0V
3: Speed Signal
4: Direction Discrimination Signal
Shield wire is connected via connector shell
[E] LF10WBPD-4P Connector Male*
*Hirose Electric connector
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| Extension Cable Model | |||
| Cable Length 5m | Cable Length 10m | Cable Length 20m | |
| CY-RA-005 | CY-RA-010 | CY-RA-020 | For RFP16A-85-P4M |
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Brown: +V DC 7 - 25V Blue: 0V White: Phase A Signal Black: Phase B Signal Shield: Insulated from the body |
||
| LF10WBJ-4S* 4-pole Female | Y-type crimp terminal 1.25Y-3 | ||
| CY-RD-005 | CY-RD-010 | CY-RD-020 | For RFP16D-85-P4M |
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Brown: +V DC 7 - 25V Blue: 0V White: Speed Signal Green: Direction Discrimination Signal Shield: Insulated from the body |
||
| LF10WBJ-4S* 4-pole Female | Y-type crimp terminal 1.25Y-3 | ||
| CC-RP-005 | CC-RP-010 | CC-RP-020 | Common to RFP16A/D-85-P4M |
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1: +V DC 7 - 25V 2: 0V 3: Phase A Signal / Speed Signal 4: Phase B Signal / Direction Discrimination Signal Shield wire is connected via connector shell |
||
| LF10WBJ-4S* 4-pole Female | LF10WBPD-4P* 4-pole Male | ||
【Caution】
Extending the sensor cable makes it more susceptible to external noise.
Since the degree of influence varies depending on conditions, we recommend verifying performance in your actual operating environment.
Notice Regarding Specification Changes and Price Revision for RFP16A-85
● Operating temperature range expanded to -40℃ to +140℃ (Effective from Sep. 1, 2017) (Applicable when supply voltage for RFP16A is under DC 15V. For DC 15 to 25V, it is -40℃ to +126℃. For RFP16D, it is -20℃ to +80℃.)
● Notice of Price Revision [Price Reduction] (Effective from Jun. 1, 2017)
Click here for details →
Combining gear sensors with our F/V converters, speed meters, high-speed pulse counters, etc., enables real-time measurement of rotational speed, angle, and more, while offering various benefits.
High Precision & High-Speed Response
PeriomaticTM F/V converters and speed meters achieve high precision and high-speed response under all conditions, from stop, ultra-low speed to high speed, rapid acceleration, and rapid deceleration.

| What is PeriomaticTM > |
Improved Measurement Reliability & Safety
Peace of mind with equipment matching from the same manufacturer. Factory setting changes are also available (measuring instruments).

*Image for illustrative purposes
Sensor Power Supply Capability*
Eliminates the need for a separate power supply for the sensor.
*Optional for some models. The GP series does not require a power supply.
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Sensor Power ![]() ![]() Measurement Signal |
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Enclosed Customized Products
|
| > Technical Info: View Types and Features of Pulse Signals |
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Response: 0 - 20kHz
Temperature: -20 to +105℃
Power Supply: DC 4.5 - 25(17)V
Output Circuit:
Semi-open collector*1
Line driver
Differential (balanced) CMOS logic*2
Detects from 0Hz, and jitter suppression technology enables accurate rotational measurement
Line driver output type supports environments with long wiring
Equipped with a power supply reverse connection protection circuit to prevent failures caused by operational errors
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Response: 0 - 15kHz
Temperature: -20 to +80℃
Power Supply: DC 4.5 - 25V
Output Circuit:
Semi-open collector*1
Pursued ease of use as a general-purpose sensor
The output circuit is unbalanced, and an output voltage nearly equivalent to the sensor power supply voltage is obtained
Equipped with a semi-open collector output circuit so it can be connected directly even if the pull-up voltage at the signal receiving end is higher than the sensor output voltage
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Response: 10 - 30kHz
Temperature: -40 to +150℃
Power Supply: DC 5 - 12V
Output Circuit:
Open collector
Built-in amplifier, usable at high temperatures (150℃)
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Response: 0 - 15kHz
Temperature:
-40 to +140℃ (RFP16A Power supply < 15V)
-40 to +126℃ (RFP16A Power supply ≥ 15V)
-20 to +80℃ (RFP16D)
Power Supply: DC 9 - 25V
Output Circuit:
Semi-open collector*1
(Phase A/B or Speed/Direction Discrimination Signal)
Detects both forward and reverse directions with a single unit. Reduces work such as hole machining and mounting adjustment
*Compatible with m1/1.5/2 / Involute gear verified
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Response: 220 - 50kHz
Temperature: -20 to +100℃
Power Supply: No power supply required
Output Circuit:
Voltage output proportional to speed*3
0.5Vp-p or more
Self-generating type using a magnet and detection coil. No power supply required
Approaches the tooth tip of a gear, etc., and outputs a frequency signal proportional to the rotational speed
*1 Semi-open collector (open collector + pull-up): A proprietary output circuit developed by our company that allows direct connection even if the pull-up voltage at the signal receiving end is higher than the sensor power supply voltage.
Unlike a simple open collector, pulse output with a voltage close to the sensor power supply voltage can be obtained.
*2 Differential (balanced) CMOS logic can be used as an unbalanced signal. When used as a balanced signal, please check the power supply voltage and output voltage specifications.
*3 In principle, the output voltage of the GP type is proportional to speed, but the GP type prevents unnecessary increases in output to improve reliability.